diff --git a/games/age-of-dwarves/data/npc_buildings.json b/games/age-of-dwarves/data/npc_buildings.json
new file mode 100644
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+++ b/games/age-of-dwarves/data/npc_buildings.json
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+{
+  "npc_buildings": [
+    {
+      "id": "beast_den",
+      "name": "Beast Den",
+      "placement": "map",
+      "owner": -1,
+      "preferred_biomes": ["temperate_grassland", "temperate_forest", "tropical_dry_forest", "savanna", "chaparral"],
+      "creature_tier_range": [1, 3],
+      "spawn_pool": {
+        "tier_1": ["wolf_pack", "feral_spider"],
+        "tier_2": ["dire_bear", "basilisk_wild"],
+        "tier_3": ["ancient_hydra"]
+      },
+      "sprite": "terrain/lair_beast_den.png",
+      "description": "A den of territorial beasts. Clear it for a reward."
+    },
+    {
+      "id": "wyvern_nest",
+      "name": "Wyvern Nest",
+      "placement": "map",
+      "owner": -1,
+      "preferred_biomes": ["alpine_meadow", "montane_forest", "alpine_tundra"],
+      "creature_tier_range": [1, 3],
+      "spawn_pool": {
+        "tier_1": ["wild_wyvern"],
+        "tier_2": ["drake_wild"],
+        "tier_3": ["elder_wyrm"]
+      },
+      "sprite": "terrain/lair_wyvern_nest.png",
+      "description": "Flying predators nest in these heights."
+    },
+    {
+      "id": "ancient_construct_site",
+      "name": "Ancient Construct Site",
+      "placement": "map",
+      "owner": -1,
+      "preferred_biomes": ["temperate_grassland", "alpine_meadow", "polar_desert", "tundra"],
+      "creature_tier_range": [1, 3],
+      "spawn_pool": {
+        "tier_1": ["stone_sentinel"],
+        "tier_2": ["iron_golem_wild"],
+        "tier_3": ["adamantine_colossus"]
+      },
+      "sprite": "terrain/lair_construct_site.png",
+      "description": "Ruined automatons patrol these ancient grounds."
+    },
+    {
+      "id": "village",
+      "name": "Village",
+      "placement": "map",
+      "owner": -1,
+      "preferred_biomes": ["temperate_forest", "temperate_grassland", "tropical_rainforest", "tropical_dry_forest", "savanna", "boreal_forest"],
+      "creature_tier_range": [],
+      "spawn_pool": {},
+      "sprite": "terrain/village.png",
+      "description": "An unvisited settlement with potential rewards."
+    },
+    {
+      "id": "ruin",
+      "name": "Ruin",
+      "placement": "map",
+      "owner": -1,
+      "preferred_biomes": [],
+      "creature_tier_range": [],
+      "spawn_pool": {},
+      "sprite": "terrain/ruin.png",
+      "description": "An abandoned lair, now crumbling. May contain salvage."
+    }
+  ]
+}