DimensionTypes are ENGINE scoped.
import org.spongepowered.api.registry.RegistryScope;
import org.spongepowered.api.registry.RegistryScopes;
-@RegistryScopes(scopes = RegistryScope.GAME)
+@RegistryScopes(scopes = RegistryScope.ENGINE)
public final class DimensionTypes {
// @formatter:off
