diff --git a/dm_env_rpc/v1/compliance/join_leave_world.py b/dm_env_rpc/v1/compliance/join_leave_world.py
index faf3ed3..a6b3e56 100644
--- a/dm_env_rpc/v1/compliance/join_leave_world.py
+++ b/dm_env_rpc/v1/compliance/join_leave_world.py
@@ -59,7 +59,7 @@ def required_join_settings(self):
   @property
   def invalid_join_settings(self):
     """A list of dicts of Join World settings which are invalid in some way."""
-    return []
+    return {}
 
   @abc.abstractproperty
   def world_name(self):
@@ -105,10 +105,13 @@ def test_cannot_join_with_wrong_world_name(self):
 
   def test_cannot_join_world_with_invalid_settings(self):
     settings = self.required_join_settings
-    for invalid_settings in self.invalid_join_settings:
+    for name, tensor in self.invalid_join_settings.items():
       with self.assertRaises(error.DmEnvRpcError):
-        self.join_world(world_name=self.world_name,
-                        settings={**settings, **invalid_settings})
+        self.join_world(
+            world_name=self.world_name, settings={
+                name: tensor,
+                **settings
+            })
 
   def test_cannot_join_world_twice(self):
     self.join_world(
diff --git a/examples/catch_environment.py b/examples/catch_environment.py
index 632d58e..3579b1f 100644
--- a/examples/catch_environment.py
+++ b/examples/catch_environment.py
@@ -139,6 +139,17 @@ def _action_spec():
   return {1: paddle_action_spec}
 
 
+def _validate_settings(settings, valid_settings):
+  """"Validate the provided settings with list of valid setting keys."""
+  unrecognized_settings = [
+      setting for setting in settings if setting not in valid_settings
+  ]
+
+  if unrecognized_settings:
+    raise ValueError('Unrecognized settings provided! Invalid settings:'
+                     f' {unrecognized_settings}')
+
+
 class CatchGameFactory(object):
   """Factory for creating new CatchGame instances."""
 
@@ -188,10 +199,12 @@ def Process(self, request_iterator, context):
         _check_message_type(env, is_joined, message_type)
 
         if message_type == 'create_world':
+          _validate_settings(request.create_world.settings, valid_settings=[])
           env = env_factory.new_game()
           skip_next_frame = True
           response = dm_env_rpc_pb2.CreateWorldResponse(world_name=_WORLD_NAME)
         elif message_type == 'join_world':
+          _validate_settings(request.join_world.settings, valid_settings=[])
           if is_joined:
             raise RuntimeError(
                 f'Tried to join world "{internal_request.world_name}" but '
@@ -238,6 +251,7 @@ def Process(self, request_iterator, context):
             env = env_factory.new_game()
             skip_next_frame = True
         elif message_type == 'reset':
+          _validate_settings(request.reset.settings, valid_settings=[])
           env = env_factory.new_game()
           skip_next_frame = True
           response = dm_env_rpc_pb2.ResetResponse()
@@ -246,6 +260,7 @@ def Process(self, request_iterator, context):
           for uid, observation in _observation_spec().items():
             response.specs.observations[uid].CopyFrom(observation)
         elif message_type == 'reset_world':
+          _validate_settings(request.reset_world.settings, valid_settings=[])
           env = env_factory.new_game()
           skip_next_frame = True
           response = dm_env_rpc_pb2.ResetWorldResponse()
diff --git a/examples/catch_test.py b/examples/catch_test.py
index 7392f3b..5c225b4 100644
--- a/examples/catch_test.py
+++ b/examples/catch_test.py
@@ -29,6 +29,7 @@
 from dm_env_rpc.v1 import dm_env_rpc_pb2
 from dm_env_rpc.v1 import dm_env_rpc_pb2_grpc
 from dm_env_rpc.v1 import error
+from dm_env_rpc.v1 import tensor_utils
 
 
 class ServerConnection:
@@ -108,7 +109,7 @@ def required_world_settings(self):
   @property
   def invalid_world_settings(self):
     """World creation settings which are invalid in some way."""
-    return {}
+    return {'invalid_setting': tensor_utils.pack_tensor(123)}
 
   @property
   def has_multiple_world_support(self):
@@ -134,6 +135,10 @@ def connection(self):
   def world_name(self):
     return self._world_name
 
+  @property
+  def invalid_join_settings(self):
+    return {'invalid_setting': tensor_utils.pack_tensor(123)}
+
   def setUp(self):
     self._server_connection = ServerConnection()
     response = self.connection.send(dm_env_rpc_pb2.CreateWorldRequest())