diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7a113471..b395378f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -43,4 +43,4 @@ jobs:
       - name: Install evolution gym
         run: pip install -e .
       - name: Run test
-        run: xvfb-run python -m pytest -s -v tests/screen_free/test_img_render_modes.py
+        run: xvfb-run python -m pytest -s -v -n auto -m lite
diff --git a/pytest.ini b/pytest.ini
index 61acd0d2..310d7672 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,2 +1,4 @@
 [pytest]
-addopts = --ignore=examples/externals --ignore=evogym/simulator/externals --ignore=evogym/examples/gym_test.py
\ No newline at end of file
+addopts = --ignore=examples/externals --ignore=evogym/simulator/externals --ignore=evogym/examples/gym_test.py
+markers =
+    lite: mark as part of the lite test suite
\ No newline at end of file
diff --git a/tests/requires_screen/test_screen_render_modes.py b/tests/requires_screen/test_screen_render_modes.py
index 5166209f..56583340 100644
--- a/tests/requires_screen/test_screen_render_modes.py
+++ b/tests/requires_screen/test_screen_render_modes.py
@@ -7,6 +7,13 @@
 import evogym.envs
 from evogym import sample_robot
 
+LITE_TEST_ENV_NAMES = [
+    "Pusher-v0",
+    "Walker-v0",
+    "Traverser-v0",
+]
+
+@pytest.mark.lite
 @pytest.mark.parametrize(
     "render_mode, add_options",
     list(product(
@@ -41,9 +48,15 @@ def test_render_modes(render_mode, add_options):
         ob, reward, terminated, truncated, info = env.step(action)
         
     env.close()
-    
-# @pytest.mark.parametrize("env_name", evogym.BASELINE_ENV_NAMES)
-@pytest.mark.parametrize("env_name", ["ObstacleTraverser-v1", "Traverser-v0"])
+
+def get_all_env_render_params():
+    return [
+        env_name if env_name not in LITE_TEST_ENV_NAMES 
+        else pytest.param(env_name, marks=pytest.mark.lite) 
+        for env_name in evogym.BASELINE_ENV_NAMES 
+    ]
+
+@pytest.mark.parametrize("env_name", get_all_env_render_params())
 def test_all_env_render(env_name):
     """
     - Env can render to screen
diff --git a/tests/screen_free/test_baseline_envs.py b/tests/screen_free/test_baseline_envs.py
index cc08f4ca..1550a19a 100644
--- a/tests/screen_free/test_baseline_envs.py
+++ b/tests/screen_free/test_baseline_envs.py
@@ -5,7 +5,20 @@
 import evogym.envs
 from evogym import sample_robot
 
-@pytest.mark.parametrize("env_name", evogym.BASELINE_ENV_NAMES)
+LITE_TEST_ENV_NAMES = [
+    "Pusher-v0",
+    "Walker-v0",
+    "Traverser-v0",
+]
+
+def get_params():
+    return [
+        env_name if env_name not in LITE_TEST_ENV_NAMES 
+        else pytest.param(env_name, marks=pytest.mark.lite) 
+        for env_name in evogym.BASELINE_ENV_NAMES 
+    ]
+
+@pytest.mark.parametrize("env_name", get_params())
 def test_env_creatable_and_has_correct_api(env_name):
     """
     - Env is creatable
diff --git a/tests/screen_free/test_img_render_modes.py b/tests/screen_free/test_img_render_modes.py
index 83c95e9b..b42e1e4e 100644
--- a/tests/screen_free/test_img_render_modes.py
+++ b/tests/screen_free/test_img_render_modes.py
@@ -7,20 +7,25 @@
 import evogym.envs
 from evogym import sample_robot
 
-# @pytest.mark.parametrize(
-#     "env_name, render_mode",
-#     list(product(
-#         evogym.BASELINE_ENV_NAMES,
-#         [None, "img", "rgb_array"],
-#     ))
-# )
-@pytest.mark.parametrize(
-    "env_name, render_mode",
-    list(product(
-        ["ObstacleTraverser-v1", "Traverser-v0"],
+LITE_TEST_ENV_NAMES = [
+    "Pusher-v0",
+    "Walker-v0",
+    "Traverser-v0",
+]
+
+def get_params():
+    params = product(
+        evogym.BASELINE_ENV_NAMES,
         [None, "img", "rgb_array"],
-    ))
-)
+    )
+    return [
+        param if param[0] not in LITE_TEST_ENV_NAMES 
+        else pytest.param(*param, marks=pytest.mark.lite) 
+        for param in params 
+    ]
+    
+    
+@pytest.mark.parametrize("env_name, render_mode", get_params())
 def test_render(env_name, render_mode):
     """
     - Env can render to none and to image
diff --git a/tests/screen_free/test_utils.py b/tests/screen_free/test_utils.py
index 38315cc9..481d0963 100644
--- a/tests/screen_free/test_utils.py
+++ b/tests/screen_free/test_utils.py
@@ -1,4 +1,5 @@
 import numpy as np
+import pytest
 from pytest import raises
 from typing import List, Tuple
 
@@ -8,6 +9,7 @@
     is_connected, has_actuator, get_full_connectivity
 )
  
+@pytest.mark.lite
 def test_get_uniform():
     ones = get_uniform(1)
     assert np.allclose(ones, np.ones(1)), (
@@ -18,7 +20,8 @@ def test_get_uniform():
     assert np.allclose(one_thirds, np.ones(3) / 3), (
         f"Expected {np.ones(3) / 3}, got {one_thirds}"
     )
-    
+
+@pytest.mark.lite    
 def test_draw():
     result = draw([0.2])
     assert result == 0, f"Expected 0, got {result}"
@@ -38,7 +41,8 @@ def test_draw():
     for i in range(10):
         result = draw(pd)
         assert result in list(range(10)), f"Expected result to be between 0 and 9, got {result}"
-        
+    
+@pytest.mark.lite    
 def test_has_actuator():
     h_act, v_act = VOXEL_TYPES['H_ACT'], VOXEL_TYPES['V_ACT']
     others = [
@@ -109,7 +113,8 @@ def test_is_connected():
         [empty, others[1], others[0]]
     ])
     assert not is_connected(robot), "Expected not connected"
-    
+
+@pytest.mark.lite    
 def test_get_full_connectivity():
     empty = VOXEL_TYPES['EMPTY']
     others = [
@@ -157,7 +162,7 @@ def connections_contains_all(connections: np.ndarray, expected: List[Tuple[int,
     assert connections.shape[0] == 2, "Expected 2"
     connections_contains_all(connections, [(0, 1), (1, 4), (4, 5)])
     
-
+@pytest.mark.lite
 def test_sample_robot():
     
     h_act, v_act, empty = VOXEL_TYPES['H_ACT'], VOXEL_TYPES['V_ACT'], VOXEL_TYPES['EMPTY']
diff --git a/tests/utils.py b/tests/utils.py
new file mode 100644
index 00000000..53b1b913
--- /dev/null
+++ b/tests/utils.py
@@ -0,0 +1,5 @@
+LITE_TEST_ENV_NAMES = [
+    "Pusher-v0",
+    "Walker-v0",
+    "Traverser-v0",
+]
\ No newline at end of file