diff --git a/public/resources/biomes/aquatic/biomes.json b/public/resources/biomes/aquatic/biomes.json
index 5af0e600..b0bfb091 100644
--- a/public/resources/biomes/aquatic/biomes.json
+++ b/public/resources/biomes/aquatic/biomes.json
@@ -13,7 +13,10 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 8,
       "substrate_types": ["deep_water"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "leviathan_grounds", "base_quantity": 2, "quality_range": [1, 4] }
+      ]
     },
     {
       "id": "shallow_ocean",
@@ -27,7 +30,11 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.3, "fungi": 0.0 },
       "fauna_capacity": 12,
       "substrate_types": ["shallow_water"],
-      "food_web_tier": "tertiary"
+      "food_web_tier": "tertiary",
+      "collectibles": [
+        { "resource": "river_fish", "base_quantity": 5, "quality_range": [1, 4] },
+        { "resource": "pearl_beds", "base_quantity": 2, "quality_range": [1, 3] }
+      ]
     },
     {
       "id": "coral_reef",
@@ -41,7 +48,12 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.6, "fungi": 0.1 },
       "fauna_capacity": 20,
       "substrate_types": ["shallow_water"],
-      "food_web_tier": "quaternary"
+      "food_web_tier": "quaternary",
+      "collectibles": [
+        { "resource": "coral_reef", "base_quantity": 6, "quality_range": [1, 5] },
+        { "resource": "pearl_beds", "base_quantity": 3, "quality_range": [2, 5] },
+        { "resource": "river_fish", "base_quantity": 4, "quality_range": [1, 3] }
+      ]
     },
     {
       "id": "estuary",
@@ -55,7 +67,11 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.5, "fungi": 0.05 },
       "fauna_capacity": 14,
       "substrate_types": ["shallow_water"],
-      "food_web_tier": "tertiary"
+      "food_web_tier": "tertiary",
+      "collectibles": [
+        { "resource": "river_fish", "base_quantity": 5, "quality_range": [1, 4] },
+        { "resource": "merfolk_shallows", "base_quantity": 2, "quality_range": [1, 3] }
+      ]
     },
     {
       "id": "lake",
@@ -69,7 +85,10 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.3, "fungi": 0.02 },
       "fauna_capacity": 10,
       "substrate_types": ["lake_bed"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "river_fish", "base_quantity": 4, "quality_range": [1, 3] }
+      ]
     },
     {
       "id": "pond",
@@ -83,7 +102,10 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.15, "fungi": 0.01 },
       "fauna_capacity": 3,
       "substrate_types": ["lake_bed"],
-      "food_web_tier": "primary"
+      "food_web_tier": "primary",
+      "collectibles": [
+        { "resource": "river_fish", "base_quantity": 1, "quality_range": [1, 2] }
+      ]
     },
     {
       "id": "river",
@@ -97,7 +119,10 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.2, "fungi": 0.01 },
       "fauna_capacity": 6,
       "substrate_types": ["shallow_water"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "river_fish", "base_quantity": 3, "quality_range": [1, 3] }
+      ]
     },
     {
       "id": "mangrove",
@@ -111,7 +136,12 @@
       "flora_climax": { "canopy": 0.6, "undergrowth": 0.5, "fungi": 0.15 },
       "fauna_capacity": 14,
       "substrate_types": ["wetland"],
-      "food_web_tier": "tertiary"
+      "food_web_tier": "tertiary",
+      "collectibles": [
+        { "resource": "river_fish", "base_quantity": 4, "quality_range": [1, 3] },
+        { "resource": "spice_groves", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "dye_plants", "base_quantity": 2, "quality_range": [1, 3] }
+      ]
     }
   ]
 }
diff --git a/public/resources/biomes/arctic/biomes.json b/public/resources/biomes/arctic/biomes.json
index 3f2fd58e..1c68ce1d 100644
--- a/public/resources/biomes/arctic/biomes.json
+++ b/public/resources/biomes/arctic/biomes.json
@@ -13,7 +13,8 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 1,
       "substrate_types": ["deep_water", "shallow_water"],
-      "food_web_tier": "primary"
+      "food_web_tier": "primary",
+      "collectibles": []
     },
     {
       "id": "glacial",
@@ -27,7 +28,8 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.01, "fungi": 0.0 },
       "fauna_capacity": 1,
       "substrate_types": ["peak", "mountain", "lowland"],
-      "food_web_tier": "primary"
+      "food_web_tier": "primary",
+      "collectibles": []
     },
     {
       "id": "polar_desert",
@@ -41,7 +43,8 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.02, "fungi": 0.0 },
       "fauna_capacity": 2,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "primary"
+      "food_web_tier": "primary",
+      "collectibles": []
     },
     {
       "id": "tundra",
@@ -55,7 +58,13 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.15, "fungi": 0.05 },
       "fauna_capacity": 5,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "exotic_furs", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "highland_deer", "base_quantity": 2, "quality_range": [1, 2] },
+        { "resource": "wild_cattle", "base_quantity": 1, "quality_range": [1, 2] },
+        { "resource": "garnet", "base_quantity": 1, "quality_range": [1, 2] }
+      ]
     },
     {
       "id": "alpine_tundra",
@@ -69,7 +78,11 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.08, "fungi": 0.02 },
       "fauna_capacity": 3,
       "substrate_types": ["mountain", "peak"],
-      "food_web_tier": "primary"
+      "food_web_tier": "primary",
+      "collectibles": [
+        { "resource": "exotic_furs", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "sapphire", "base_quantity": 1, "quality_range": [1, 2] }
+      ]
     },
     {
       "id": "boreal_forest",
@@ -83,7 +96,13 @@
       "flora_climax": { "canopy": 0.7, "undergrowth": 0.35, "fungi": 0.3 },
       "fauna_capacity": 12,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "tertiary"
+      "food_web_tier": "tertiary",
+      "collectibles": [
+        { "resource": "exotic_furs", "base_quantity": 4, "quality_range": [1, 4] },
+        { "resource": "highland_deer", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "wild_game", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "iron_ore", "base_quantity": 2, "quality_range": [1, 3] }
+      ]
     }
   ]
 }
diff --git a/public/resources/biomes/arid_world/biomes.json b/public/resources/biomes/arid_world/biomes.json
index 8664802e..8c989591 100644
--- a/public/resources/biomes/arid_world/biomes.json
+++ b/public/resources/biomes/arid_world/biomes.json
@@ -13,7 +13,8 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 0,
       "substrate_types": ["regolith", "lowland"],
-      "food_web_tier": "none"
+      "food_web_tier": "none",
+      "collectibles": []
     },
     {
       "id": "canyon",
@@ -27,7 +28,11 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 0,
       "substrate_types": ["canyon_wall", "highland_basalt"],
-      "food_web_tier": "none"
+      "food_web_tier": "none",
+      "collectibles": [
+        { "resource": "obsidian", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "turquoise", "base_quantity": 1, "quality_range": [1, 3] }
+      ]
     },
     {
       "id": "ancient_lakebed",
@@ -41,7 +46,11 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 0,
       "substrate_types": ["clay", "lowland"],
-      "food_web_tier": "none"
+      "food_web_tier": "none",
+      "collectibles": [
+        { "resource": "saltpeter_deposit", "base_quantity": 2, "quality_range": [1, 2] },
+        { "resource": "gypsum", "base_quantity": 2, "quality_range": [1, 2] }
+      ]
     },
     {
       "id": "dune_field",
@@ -55,7 +64,8 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 0,
       "substrate_types": ["sand", "regolith"],
-      "food_web_tier": "none"
+      "food_web_tier": "none",
+      "collectibles": []
     }
   ]
 }
diff --git a/public/resources/biomes/elevated/biomes.json b/public/resources/biomes/elevated/biomes.json
index ed68edd6..399c537c 100644
--- a/public/resources/biomes/elevated/biomes.json
+++ b/public/resources/biomes/elevated/biomes.json
@@ -13,7 +13,16 @@
       "flora_climax": { "canopy": 0.2, "undergrowth": 0.3, "fungi": 0.1 },
       "fauna_capacity": 8,
       "substrate_types": ["highland", "midland"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "iron_ore", "base_quantity": 4, "quality_range": [1, 4] },
+        { "resource": "coal_seam", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "gold_vein", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "sheep_herds", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "amethyst", "base_quantity": 1, "quality_range": [1, 3] },
+        { "resource": "pyrite", "base_quantity": 2, "quality_range": [1, 2] },
+        { "resource": "quartz", "base_quantity": 2, "quality_range": [1, 2] }
+      ]
     },
     {
       "id": "mountains",
@@ -27,7 +36,17 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.05, "fungi": 0.02 },
       "fauna_capacity": 3,
       "substrate_types": ["mountain", "peak"],
-      "food_web_tier": "primary"
+      "food_web_tier": "primary",
+      "collectibles": [
+        { "resource": "iron_ore", "base_quantity": 3, "quality_range": [1, 4] },
+        { "resource": "coal_seam", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "gold_vein", "base_quantity": 2, "quality_range": [2, 4] },
+        { "resource": "diamond", "base_quantity": 1, "quality_range": [2, 5] },
+        { "resource": "alexandrite", "base_quantity": 1, "quality_range": [3, 5] },
+        { "resource": "fluorite", "base_quantity": 1, "quality_range": [1, 3] },
+        { "resource": "calcite", "base_quantity": 2, "quality_range": [1, 2] },
+        { "resource": "ancient_marble", "base_quantity": 1, "quality_range": [3, 5] }
+      ]
     },
     {
       "id": "alpine_meadow",
@@ -41,7 +60,12 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.3, "fungi": 0.08 },
       "fauna_capacity": 6,
       "substrate_types": ["highland", "mountain"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "sheep_herds", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "wild_game", "base_quantity": 2, "quality_range": [1, 2] },
+        { "resource": "garnet", "base_quantity": 1, "quality_range": [1, 3] }
+      ]
     },
     {
       "id": "montane_forest",
@@ -55,7 +79,13 @@
       "flora_climax": { "canopy": 0.75, "undergrowth": 0.45, "fungi": 0.25 },
       "fauna_capacity": 14,
       "substrate_types": ["highland"],
-      "food_web_tier": "tertiary"
+      "food_web_tier": "tertiary",
+      "collectibles": [
+        { "resource": "wild_game", "base_quantity": 5, "quality_range": [1, 4] },
+        { "resource": "iron_ore", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "emerald", "base_quantity": 1, "quality_range": [2, 4] },
+        { "resource": "jade", "base_quantity": 1, "quality_range": [2, 4] }
+      ]
     },
     {
       "id": "cloud_forest",
@@ -69,7 +99,13 @@
       "flora_climax": { "canopy": 0.8, "undergrowth": 0.65, "fungi": 0.5 },
       "fauna_capacity": 20,
       "substrate_types": ["highland"],
-      "food_web_tier": "quaternary"
+      "food_web_tier": "quaternary",
+      "collectibles": [
+        { "resource": "wild_game", "base_quantity": 6, "quality_range": [1, 4] },
+        { "resource": "emerald", "base_quantity": 2, "quality_range": [2, 5] },
+        { "resource": "jade", "base_quantity": 2, "quality_range": [2, 4] },
+        { "resource": "opal", "base_quantity": 1, "quality_range": [2, 4] }
+      ]
     }
   ]
 }
diff --git a/public/resources/biomes/geological/biomes.json b/public/resources/biomes/geological/biomes.json
index 51dd6212..aeb5b51b 100644
--- a/public/resources/biomes/geological/biomes.json
+++ b/public/resources/biomes/geological/biomes.json
@@ -13,7 +13,11 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 1,
       "substrate_types": ["mountain"],
-      "food_web_tier": "primary"
+      "food_web_tier": "primary",
+      "collectibles": [
+        { "resource": "obsidian", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "ruby", "base_quantity": 1, "quality_range": [2, 4] }
+      ]
     },
     {
       "id": "subterranean",
@@ -27,7 +31,14 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.1, "fungi": 0.6 },
       "fauna_capacity": 8,
       "substrate_types": ["cave"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "iron_ore", "base_quantity": 4, "quality_range": [1, 4] },
+        { "resource": "coal_seam", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "fluorite", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "selenite", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "calcite", "base_quantity": 3, "quality_range": [1, 2] }
+      ]
     }
   ]
 }
diff --git a/public/resources/biomes/temperate/biomes.json b/public/resources/biomes/temperate/biomes.json
index 58c4bdba..657a603e 100644
--- a/public/resources/biomes/temperate/biomes.json
+++ b/public/resources/biomes/temperate/biomes.json
@@ -13,7 +13,12 @@
       "flora_climax": { "canopy": 0.1, "undergrowth": 0.35, "fungi": 0.05 },
       "fauna_capacity": 8,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "wild_game", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "sheep_herds", "base_quantity": 2, "quality_range": [1, 2] },
+        { "resource": "incense_flowers", "base_quantity": 2, "quality_range": [1, 3] }
+      ]
     },
     {
       "id": "temperate_grassland",
@@ -27,7 +32,15 @@
       "flora_climax": { "canopy": 0.05, "undergrowth": 0.55, "fungi": 0.1 },
       "fauna_capacity": 14,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "wild_game", "base_quantity": 5, "quality_range": [1, 3] },
+        { "resource": "wild_cattle", "base_quantity": 4, "quality_range": [1, 3] },
+        { "resource": "sheep_herds", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "grain_fields", "base_quantity": 4, "quality_range": [1, 3] },
+        { "resource": "shadow_wine", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "dye_plants", "base_quantity": 2, "quality_range": [1, 2] }
+      ]
     },
     {
       "id": "temperate_forest",
@@ -41,7 +54,15 @@
       "flora_climax": { "canopy": 0.85, "undergrowth": 0.6, "fungi": 0.35 },
       "fauna_capacity": 18,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "tertiary"
+      "food_web_tier": "tertiary",
+      "collectibles": [
+        { "resource": "wild_game", "base_quantity": 7, "quality_range": [1, 4] },
+        { "resource": "iron_ore", "base_quantity": 3, "quality_range": [1, 4] },
+        { "resource": "bog_mushrooms", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "exotic_furs", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "dye_plants", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "shadow_wine", "base_quantity": 2, "quality_range": [1, 4] }
+      ]
     }
   ]
 }
diff --git a/public/resources/biomes/tropical/biomes.json b/public/resources/biomes/tropical/biomes.json
index 54df455b..e0b1a48d 100644
--- a/public/resources/biomes/tropical/biomes.json
+++ b/public/resources/biomes/tropical/biomes.json
@@ -13,7 +13,17 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.08, "fungi": 0.01 },
       "fauna_capacity": 4,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "primary"
+      "food_web_tier": "primary",
+      "collectibles": [
+        { "resource": "gold_vein", "base_quantity": 2, "quality_range": [1, 4] },
+        { "resource": "saltpeter_deposit", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "obsidian", "base_quantity": 1, "quality_range": [1, 3] },
+        { "resource": "turquoise", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "opal", "base_quantity": 1, "quality_range": [1, 4] },
+        { "resource": "agate", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "gypsum", "base_quantity": 2, "quality_range": [1, 2] },
+        { "resource": "incense_flowers", "base_quantity": 2, "quality_range": [1, 3] }
+      ]
     },
     {
       "id": "savanna",
@@ -27,7 +37,13 @@
       "flora_climax": { "canopy": 0.15, "undergrowth": 0.45, "fungi": 0.05 },
       "fauna_capacity": 12,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "wild_game", "base_quantity": 5, "quality_range": [1, 3] },
+        { "resource": "wild_cattle", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "incense_flowers", "base_quantity": 2, "quality_range": [1, 3] },
+        { "resource": "dye_plants", "base_quantity": 2, "quality_range": [1, 2] }
+      ]
     },
     {
       "id": "tropical_dry_forest",
@@ -41,7 +57,13 @@
       "flora_climax": { "canopy": 0.65, "undergrowth": 0.5, "fungi": 0.2 },
       "fauna_capacity": 16,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "tertiary"
+      "food_web_tier": "tertiary",
+      "collectibles": [
+        { "resource": "wild_game", "base_quantity": 5, "quality_range": [1, 3] },
+        { "resource": "spice_groves", "base_quantity": 3, "quality_range": [1, 4] },
+        { "resource": "dye_plants", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "jade", "base_quantity": 1, "quality_range": [2, 4] }
+      ]
     },
     {
       "id": "tropical_rainforest",
@@ -55,7 +77,14 @@
       "flora_climax": { "canopy": 0.95, "undergrowth": 0.7, "fungi": 0.4 },
       "fauna_capacity": 25,
       "substrate_types": ["lowland", "midland"],
-      "food_web_tier": "quaternary"
+      "food_web_tier": "quaternary",
+      "collectibles": [
+        { "resource": "wild_game", "base_quantity": 8, "quality_range": [1, 4] },
+        { "resource": "spice_groves", "base_quantity": 4, "quality_range": [1, 5] },
+        { "resource": "dye_plants", "base_quantity": 3, "quality_range": [1, 4] },
+        { "resource": "gems", "base_quantity": 2, "quality_range": [2, 5] },
+        { "resource": "emerald", "base_quantity": 2, "quality_range": [2, 5] }
+      ]
     }
   ]
 }
diff --git a/public/resources/biomes/volcanic_world/biomes.json b/public/resources/biomes/volcanic_world/biomes.json
index 8ffe5e4d..4e1b148d 100644
--- a/public/resources/biomes/volcanic_world/biomes.json
+++ b/public/resources/biomes/volcanic_world/biomes.json
@@ -13,7 +13,11 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 0,
       "substrate_types": ["basalt", "regolith"],
-      "food_web_tier": "none"
+      "food_web_tier": "none",
+      "collectibles": [
+        { "resource": "obsidian", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "saltpeter_deposit", "base_quantity": 2, "quality_range": [1, 2] }
+      ]
     },
     {
       "id": "lava_field",
@@ -27,7 +31,8 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 0,
       "substrate_types": ["lava", "basalt"],
-      "food_web_tier": "none"
+      "food_web_tier": "none",
+      "collectibles": []
     },
     {
       "id": "caldera",
@@ -41,7 +46,11 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 0,
       "substrate_types": ["volcanic_rock", "basalt"],
-      "food_web_tier": "none"
+      "food_web_tier": "none",
+      "collectibles": [
+        { "resource": "obsidian", "base_quantity": 4, "quality_range": [2, 4] },
+        { "resource": "ruby", "base_quantity": 1, "quality_range": [3, 5] }
+      ]
     },
     {
       "id": "basalt_highland",
@@ -55,7 +64,11 @@
       "flora_climax": { "canopy": 0.0, "undergrowth": 0.0, "fungi": 0.0 },
       "fauna_capacity": 0,
       "substrate_types": ["basalt", "highland_basalt"],
-      "food_web_tier": "none"
+      "food_web_tier": "none",
+      "collectibles": [
+        { "resource": "obsidian", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "iron_ore", "base_quantity": 2, "quality_range": [1, 3] }
+      ]
     }
   ]
 }
diff --git a/public/resources/biomes/wetland/biomes.json b/public/resources/biomes/wetland/biomes.json
index d1139c95..51a4a2cc 100644
--- a/public/resources/biomes/wetland/biomes.json
+++ b/public/resources/biomes/wetland/biomes.json
@@ -13,7 +13,14 @@
       "flora_climax": { "canopy": 0.5, "undergrowth": 0.6, "fungi": 0.45 },
       "fauna_capacity": 15,
       "substrate_types": ["wetland"],
-      "food_web_tier": "tertiary"
+      "food_web_tier": "tertiary",
+      "collectibles": [
+        { "resource": "bog_mushrooms", "base_quantity": 5, "quality_range": [1, 4] },
+        { "resource": "nightshade", "base_quantity": 3, "quality_range": [1, 4] },
+        { "resource": "dye_plants", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "river_fish", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "gems", "base_quantity": 1, "quality_range": [2, 4] }
+      ]
     },
     {
       "id": "bog",
@@ -27,7 +34,12 @@
       "flora_climax": { "canopy": 0.05, "undergrowth": 0.3, "fungi": 0.2 },
       "fauna_capacity": 6,
       "substrate_types": ["wetland"],
-      "food_web_tier": "secondary"
+      "food_web_tier": "secondary",
+      "collectibles": [
+        { "resource": "bog_mushrooms", "base_quantity": 3, "quality_range": [1, 3] },
+        { "resource": "nightshade", "base_quantity": 1, "quality_range": [1, 3] },
+        { "resource": "river_fish", "base_quantity": 2, "quality_range": [1, 2] }
+      ]
     }
   ]
 }
diff --git a/public/resources/resources.json b/public/resources/resources.json
new file mode 100644
index 00000000..ea4e3ff3
--- /dev/null
+++ b/public/resources/resources.json
@@ -0,0 +1,523 @@
+{
+  "_schema_notes": {
+    "quality_scale": {
+      "description": "Multiplier applied to all yield bonuses based on deposit richness. Five discrete levels.",
+      "1": { "multiplier": 0.5, "rationale": "Marginal vein — barely worth extracting. Civ5 equivalent of a sparse tile that barely tips a worker's time investment." },
+      "2": { "multiplier": 0.75, "rationale": "Workable seam — typical poor-mountain find. Yields something but cities won't grow around it." },
+      "3": { "multiplier": 1.0, "rationale": "Standard vein — the baseline all listed yields are balanced against. Map-gen targets this as the median." },
+      "4": { "multiplier": 1.25, "rationale": "Rich vein — notable enough players reroute borders to capture it. Civ5 luxury equivalent with a visible bonus." },
+      "5": { "multiplier": 1.5, "rationale": "Mother lode — rarest 5% of spawns. Justifies war to hold it. Civ5 analogue: natural wonder–adjacent resource tile." }
+    },
+    "quantity": "Integer 1–5. How many units a tile yields when improved. Stacks with quality multiplier. Luxury happiness applies once per unique type regardless of quantity — quantity increases trade value only.",
+    "category_rules": {
+      "bonus": "Always visible. No tech gate, no trade. Yields food/production only. happiness_per_copy: 0.",
+      "luxury": "Tech-gated. Tradeable (1 copy = +happiness_per_copy per turn to receiving empire). Primary diplomatic trade good. Gates no units.",
+      "strategic": "Tech-gated. Required to train gates_units entries. Tradeable. happiness_per_copy: 0 — strategic value is military, not comfort."
+    }
+  },
+
+  "bonus": [
+    {
+      "id": "deer",
+      "name": "Deer",
+      "category": "bonus",
+      "description": "Wild deer herds providing steady meat and hides.",
+      "terrains": ["forest", "tundra", "grassland"],
+      "revealed_by_tech": null,
+      "yields": { "food": 2, "production": 0, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 4],
+      "gates_units": [],
+      "improvement_required": "hunting_camp",
+      "sprite": "sprites/resources/deer.png",
+      "tags": ["fauna", "food"]
+    },
+    {
+      "id": "bison",
+      "name": "Bison",
+      "category": "bonus",
+      "description": "Massive plains aurochs hunted for meat and bone tools.",
+      "terrains": ["plains", "grassland"],
+      "revealed_by_tech": null,
+      "yields": { "food": 1, "production": 1, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 4],
+      "gates_units": [],
+      "improvement_required": "hunting_camp",
+      "sprite": "sprites/resources/bison.png",
+      "tags": ["fauna", "food"]
+    },
+    {
+      "id": "fish",
+      "name": "Fish",
+      "category": "bonus",
+      "description": "Freshwater shoals in rivers and lake margins.",
+      "terrains": ["coast", "lake", "river"],
+      "revealed_by_tech": null,
+      "yields": { "food": 2, "production": 0, "trade": 1, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "fishing_boats",
+      "sprite": "sprites/resources/fish.png",
+      "tags": ["aquatic", "food"]
+    },
+    {
+      "id": "crabs",
+      "name": "Crabs",
+      "category": "bonus",
+      "description": "Shellfish beds harvested by net and trap along rocky shores.",
+      "terrains": ["coast"],
+      "revealed_by_tech": null,
+      "yields": { "food": 2, "production": 0, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 3],
+      "gates_units": [],
+      "improvement_required": "fishing_boats",
+      "sprite": "sprites/resources/crabs.png",
+      "tags": ["aquatic", "food"]
+    },
+    {
+      "id": "wheat",
+      "name": "Wheat",
+      "category": "bonus",
+      "description": "Wild grain stands growing thick in temperate lowlands.",
+      "terrains": ["plains", "grassland"],
+      "revealed_by_tech": null,
+      "yields": { "food": 2, "production": 0, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 4],
+      "gates_units": [],
+      "improvement_required": "farm",
+      "sprite": "sprites/resources/wheat.png",
+      "tags": ["flora", "food"]
+    },
+    {
+      "id": "cattle",
+      "name": "Cattle",
+      "category": "bonus",
+      "description": "Semi-wild aurochs herds on open grassland.",
+      "terrains": ["grassland", "plains"],
+      "revealed_by_tech": "animal_husbandry",
+      "yields": { "food": 1, "production": 1, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 4],
+      "gates_units": [],
+      "improvement_required": "pasture",
+      "sprite": "sprites/resources/cattle.png",
+      "tags": ["fauna", "food"]
+    },
+    {
+      "id": "sheep",
+      "name": "Sheep",
+      "category": "bonus",
+      "description": "Wild mountain sheep providing wool, meat, and milk.",
+      "terrains": ["hills", "grassland", "tundra"],
+      "revealed_by_tech": "animal_husbandry",
+      "yields": { "food": 2, "production": 0, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 4],
+      "gates_units": [],
+      "improvement_required": "pasture",
+      "sprite": "sprites/resources/sheep.png",
+      "tags": ["fauna", "food"]
+    },
+    {
+      "id": "stone",
+      "name": "Stone",
+      "category": "bonus",
+      "description": "Exposed limestone and granite outcroppings. Cut stone accelerates early construction.",
+      "terrains": ["hills", "plains", "grassland"],
+      "revealed_by_tech": null,
+      "yields": { "food": 0, "production": 2, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "quarry",
+      "sprite": "sprites/resources/stone.png",
+      "tags": ["mineral", "production"]
+    },
+    {
+      "id": "timber",
+      "name": "Timber",
+      "category": "bonus",
+      "description": "Dense old-growth timber stands suitable for beams and construction.",
+      "terrains": ["forest", "jungle"],
+      "revealed_by_tech": null,
+      "yields": { "food": 0, "production": 2, "trade": 1, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 5],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "lumber_mill",
+      "sprite": "sprites/resources/timber.png",
+      "tags": ["flora", "production"]
+    }
+  ],
+
+  "luxury": [
+    {
+      "id": "furs",
+      "name": "Furs",
+      "category": "luxury",
+      "description": "Premium arctic pelts — warmth and clan status in cold lands.",
+      "terrains": ["tundra", "forest", "arctic"],
+      "revealed_by_tech": "trapping",
+      "yields": { "food": 0, "production": 0, "trade": 4, "culture": 1 },
+      "happiness_per_copy": 4,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "hunting_camp",
+      "sprite": "sprites/resources/furs.png",
+      "tags": ["fauna", "luxury", "cold"]
+    },
+    {
+      "id": "ivory",
+      "name": "Ivory",
+      "category": "luxury",
+      "description": "Carved tusks from ancient horned beasts. Prized by craftsmen and collectors.",
+      "terrains": ["plains", "grassland", "desert"],
+      "revealed_by_tech": "trapping",
+      "yields": { "food": 0, "production": 1, "trade": 3, "culture": 1 },
+      "happiness_per_copy": 4,
+      "quantity_range": [1, 2],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "hunting_camp",
+      "sprite": "sprites/resources/ivory.png",
+      "tags": ["fauna", "luxury"]
+    },
+    {
+      "id": "silk",
+      "name": "Silk",
+      "category": "luxury",
+      "description": "Thread from rare cave moth cocoons — lightweight and lustrous.",
+      "terrains": ["forest", "jungle"],
+      "revealed_by_tech": "scholarship",
+      "yields": { "food": 0, "production": 0, "trade": 5, "culture": 1 },
+      "happiness_per_copy": 5,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "plantation",
+      "sprite": "sprites/resources/silk.png",
+      "tags": ["flora", "luxury"]
+    },
+    {
+      "id": "spices",
+      "name": "Spices",
+      "category": "luxury",
+      "description": "Rare aromatic herbs from deep jungle undergrowth. Transformative in cuisine and medicine.",
+      "terrains": ["jungle", "forest"],
+      "revealed_by_tech": "herbalism",
+      "yields": { "food": 1, "production": 0, "trade": 3, "culture": 0 },
+      "happiness_per_copy": 4,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 4],
+      "gates_units": [],
+      "improvement_required": "plantation",
+      "sprite": "sprites/resources/spices.png",
+      "tags": ["flora", "luxury"]
+    },
+    {
+      "id": "dyes",
+      "name": "Dyes",
+      "category": "luxury",
+      "description": "Deep-colored mineral and plant pigments used in clan heraldry and trade goods.",
+      "terrains": ["jungle", "plains", "desert"],
+      "revealed_by_tech": "culture",
+      "yields": { "food": 0, "production": 0, "trade": 3, "culture": 2 },
+      "happiness_per_copy": 4,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "plantation",
+      "sprite": "sprites/resources/dyes.png",
+      "tags": ["flora", "luxury", "culture"]
+    },
+    {
+      "id": "amber",
+      "name": "Amber",
+      "category": "luxury",
+      "description": "Ancient fossilized tree resin, golden and warm. Traded as curiosity across the known world.",
+      "terrains": ["forest", "plains"],
+      "revealed_by_tech": "scholarship",
+      "yields": { "food": 0, "production": 0, "trade": 5, "culture": 2 },
+      "happiness_per_copy": 5,
+      "quantity_range": [1, 2],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "mine",
+      "sprite": "sprites/resources/amber.png",
+      "tags": ["mineral", "luxury"]
+    },
+    {
+      "id": "salt",
+      "name": "Salt",
+      "category": "luxury",
+      "description": "Rock salt veins deep in desert karst. Indispensable for preservation and flavoring.",
+      "terrains": ["desert", "hills"],
+      "revealed_by_tech": null,
+      "yields": { "food": 1, "production": 0, "trade": 3, "culture": 0 },
+      "happiness_per_copy": 3,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 4],
+      "gates_units": [],
+      "improvement_required": "mine",
+      "sprite": "sprites/resources/salt.png",
+      "tags": ["mineral", "luxury"]
+    },
+    {
+      "id": "wine",
+      "name": "Wine",
+      "category": "luxury",
+      "description": "Wild grape vines on warm hillside terraces. Fermented wine is both sustenance and status.",
+      "terrains": ["grassland", "hills", "plains"],
+      "revealed_by_tech": "agriculture",
+      "yields": { "food": 1, "production": 0, "trade": 3, "culture": 1 },
+      "happiness_per_copy": 4,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "plantation",
+      "sprite": "sprites/resources/wine.png",
+      "tags": ["flora", "luxury"]
+    },
+    {
+      "id": "incense",
+      "name": "Incense",
+      "category": "luxury",
+      "description": "Fragrant resins burned at clan hearths and before the ancestors.",
+      "terrains": ["desert", "plains"],
+      "revealed_by_tech": "culture",
+      "yields": { "food": 0, "production": 0, "trade": 4, "culture": 2 },
+      "happiness_per_copy": 5,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "plantation",
+      "sprite": "sprites/resources/incense.png",
+      "tags": ["flora", "luxury", "culture"]
+    },
+    {
+      "id": "pearls",
+      "name": "Pearls",
+      "category": "luxury",
+      "description": "River pearls from molluscs in slow, clear waterways. Rare and beautiful.",
+      "terrains": ["coast", "lake", "river"],
+      "revealed_by_tech": "fishing",
+      "yields": { "food": 0, "production": 0, "trade": 5, "culture": 1 },
+      "happiness_per_copy": 5,
+      "quantity_range": [1, 2],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "fishing_boats",
+      "sprite": "sprites/resources/pearls.png",
+      "tags": ["aquatic", "luxury"]
+    },
+    {
+      "id": "copper",
+      "name": "Copper",
+      "category": "luxury",
+      "description": "Surface copper deposits. Beyond tools, sheet copper becomes currency and ceremonial art.",
+      "terrains": ["hills", "plains"],
+      "revealed_by_tech": "bronze_working",
+      "yields": { "food": 0, "production": 1, "trade": 3, "culture": 0 },
+      "happiness_per_copy": 3,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 4],
+      "gates_units": [],
+      "improvement_required": "mine",
+      "sprite": "sprites/resources/copper.png",
+      "tags": ["mineral", "luxury"]
+    },
+    {
+      "id": "marble",
+      "name": "Marble",
+      "category": "luxury",
+      "description": "White and grey marble veins sought after for monuments and clan halls.",
+      "terrains": ["hills", "mountains"],
+      "revealed_by_tech": "masonry",
+      "yields": { "food": 0, "production": 1, "trade": 2, "culture": 3 },
+      "happiness_per_copy": 4,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "quarry",
+      "sprite": "sprites/resources/marble.png",
+      "tags": ["mineral", "luxury", "culture"]
+    },
+    {
+      "id": "gems",
+      "name": "Gems",
+      "category": "luxury",
+      "description": "Pockets of uncut sapphires, rubies, and garnets found in deep mountain clefts.",
+      "terrains": ["mountains", "hills"],
+      "revealed_by_tech": "mining",
+      "yields": { "food": 0, "production": 0, "trade": 6, "culture": 1 },
+      "happiness_per_copy": 6,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "mine",
+      "sprite": "sprites/resources/gems.png",
+      "tags": ["mineral", "luxury"]
+    },
+    {
+      "id": "gold",
+      "name": "Gold",
+      "category": "luxury",
+      "description": "Concentrated gold veins in mountain granite. The universal measure of clan wealth.",
+      "terrains": ["hills", "mountains", "desert"],
+      "revealed_by_tech": "mining",
+      "yields": { "food": 0, "production": 0, "trade": 7, "culture": 0 },
+      "happiness_per_copy": 5,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "mine",
+      "sprite": "sprites/resources/gold.png",
+      "tags": ["mineral", "luxury"]
+    },
+    {
+      "id": "obsidian_glass",
+      "name": "Obsidian Glass",
+      "category": "luxury",
+      "description": "Volcanic obsidian knapped to a razor edge. A prestige material in blade-craft and ceremony.",
+      "terrains": ["volcano", "mountains", "desert"],
+      "revealed_by_tech": "metallurgy",
+      "yields": { "food": 0, "production": 1, "trade": 4, "culture": 2 },
+      "happiness_per_copy": 4,
+      "quantity_range": [1, 2],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "mine",
+      "sprite": "sprites/resources/obsidian_glass.png",
+      "tags": ["mineral", "luxury", "volcanic"]
+    }
+  ],
+
+  "strategic": [
+    {
+      "id": "iron",
+      "name": "Iron",
+      "category": "strategic",
+      "description": "Iron ore deposits suitable for smelting into weapons-grade metal.",
+      "terrains": ["hills", "mountains"],
+      "revealed_by_tech": "bronze_working",
+      "yields": { "food": 0, "production": 3, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 5],
+      "quality_range": [1, 5],
+      "gates_units": ["pikeman", "cavalry", "berserker"],
+      "improvement_required": "mine",
+      "sprite": "sprites/resources/iron.png",
+      "tags": ["mineral", "strategic", "military"]
+    },
+    {
+      "id": "horses",
+      "name": "Horses",
+      "category": "strategic",
+      "description": "Wild horse herds on open plains. Domesticated horses transform early military mobility.",
+      "terrains": ["plains", "grassland", "tundra"],
+      "revealed_by_tech": "animal_husbandry",
+      "yields": { "food": 1, "production": 1, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 4],
+      "gates_units": ["cavalry"],
+      "improvement_required": "pasture",
+      "sprite": "sprites/resources/horses.png",
+      "tags": ["fauna", "strategic", "military"]
+    },
+    {
+      "id": "coal",
+      "name": "Coal",
+      "category": "strategic",
+      "description": "Deep coal seams essential for high-temperature forges and industrial smelting.",
+      "terrains": ["hills", "mountains"],
+      "revealed_by_tech": "metallurgy",
+      "yields": { "food": 0, "production": 4, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 5],
+      "quality_range": [1, 5],
+      "gates_units": ["runesmith"],
+      "improvement_required": "mine",
+      "sprite": "sprites/resources/coal.png",
+      "tags": ["mineral", "strategic", "production"]
+    },
+    {
+      "id": "saltpeter",
+      "name": "Saltpeter",
+      "category": "strategic",
+      "description": "Potassium nitrate precipitating in cave karst and desert margins. Essential for advanced military.",
+      "terrains": ["desert", "hills", "mountains"],
+      "revealed_by_tech": "alchemy",
+      "yields": { "food": 0, "production": 1, "trade": 2, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 4],
+      "gates_units": [],
+      "improvement_required": "mine",
+      "sprite": "sprites/resources/saltpeter.png",
+      "tags": ["mineral", "strategic"]
+    },
+    {
+      "id": "hardwood",
+      "name": "Hardwood",
+      "category": "strategic",
+      "description": "Dense old-growth ironwood and darkwood required for siege equipment and fortifications.",
+      "terrains": ["forest", "jungle"],
+      "revealed_by_tech": "engineering",
+      "yields": { "food": 0, "production": 3, "trade": 0, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 5],
+      "gates_units": [],
+      "improvement_required": "lumber_mill",
+      "sprite": "sprites/resources/hardwood.png",
+      "tags": ["flora", "strategic", "production"]
+    },
+    {
+      "id": "hides",
+      "name": "Hides",
+      "category": "strategic",
+      "description": "Heavy cave bear and mountain ox hides cured for armor and equipment.",
+      "terrains": ["forest", "tundra", "plains"],
+      "revealed_by_tech": "trapping",
+      "yields": { "food": 0, "production": 2, "trade": 1, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 3],
+      "quality_range": [1, 4],
+      "gates_units": ["archer"],
+      "improvement_required": "hunting_camp",
+      "sprite": "sprites/resources/hides.png",
+      "tags": ["fauna", "strategic", "military"]
+    },
+    {
+      "id": "flint",
+      "name": "Flint",
+      "category": "strategic",
+      "description": "Flint-bearing chert beds in chalk plains. The first worked stone — essential for arrow tips.",
+      "terrains": ["plains", "hills", "desert"],
+      "revealed_by_tech": null,
+      "yields": { "food": 0, "production": 1, "trade": 1, "culture": 0 },
+      "happiness_per_copy": 0,
+      "quantity_range": [1, 4],
+      "quality_range": [1, 3],
+      "gates_units": ["warrior", "archer"],
+      "improvement_required": "quarry",
+      "sprite": "sprites/resources/flint.png",
+      "tags": ["mineral", "strategic"]
+    }
+  ]
+}