diff --git a/builtin/game/builtin_biome.lua b/builtin/game/builtin_biome.lua
new file mode 100644
index 000000000..ac0397df6
--- /dev/null
+++ b/builtin/game/builtin_biome.lua
@@ -0,0 +1,9 @@
+minetest.register_biome({
+	name           = "Grass",
+
+	heat_point     = 50.0,
+	humidity_point = 50.0,
+	height_min = -31000,
+	height_max = 31000,
+})
+
diff --git a/builtin/game/init.lua b/builtin/game/init.lua
index 3f82f85c7..6b3f9be3f 100644
--- a/builtin/game/init.lua
+++ b/builtin/game/init.lua
@@ -25,4 +25,5 @@ dofile(gamepath.."features.lua")
 dofile(gamepath.."voxelarea.lua")
 dofile(gamepath.."forceloading.lua")
 dofile(gamepath.."statbars.lua")
+dofile(gamepath.."builtin_biome.lua")