diff --git a/engine/src/worlds/earth/manifest.json b/engine/src/worlds/earth/manifest.json
index b25fc4ad..add025b7 100644
--- a/engine/src/worlds/earth/manifest.json
+++ b/engine/src/worlds/earth/manifest.json
@@ -8,6 +8,16 @@
   "grid_width": 40,
   "grid_height": 24,
   "polar_rows": 2,
+  "physics_features": {
+    "water_cycle": true,
+    "weather_events": true,
+    "ecology": true,
+    "volcanism": true,
+    "co2_cycle": false,
+    "dust_storms": false,
+    "acid_clouds": false
+  },
   "subscribes_biomes": ["aquatic", "arctic", "temperate", "tropical", "elevated", "wetland", "special"],
-  "subscribes_substrates": ["substrates"]
+  "subscribes_substrates": ["substrates"],
+  "subscribes_events": ["events"]
 }