diff --git a/src/core.rs b/src/core.rs
index 3880a00..36d5edd 100644
--- a/src/core.rs
+++ b/src/core.rs
@@ -591,6 +591,7 @@ impl Plugin for CorePlugin {
         app.insert_resource(config)
             .register_type::<CardinalDirection>()
             .add_plugins(PhysicsPlugins::default().with_length_unit(config.pixels_per_unit as f32))
+            .insert_resource(Gravity(Vec2::ZERO))
             .add_systems(Startup, setup)
             .add_systems(Update, sync_config);
     }