diff --git a/unit2/unit2-bonus/readme.md b/unit2/unit2-bonus/readme.md
index 8b13789..d66d964 100644
--- a/unit2/unit2-bonus/readme.md
+++ b/unit2/unit2-bonus/readme.md
@@ -1 +1,14 @@
+# Unit 2 Bonus 🎁
+If you want to go deeper into Stable Baselines3 before our next week unit about Deep Q-Learning you can **check these cool environments 🚀**:
 
+<img src="../assets/img/bonus-unit2.jpg" alt="Illustration unit 2 bonus"/>
+
+- [Minigrid environment](https://github.com/maximecb/gym-minigrid): puzzle environments where your agent needs to find the way out using keys 🔐 and doors 🚪 : https://github.com/maximecb/gym-minigrid
+
+- [Procgen Benchmark](https://stable-baselines3.readthedocs.io/en/master/guide/examples.html#sb3-and-procgenenv): 16 simple-to-use procedurally-generated gym environments (platform, shooters etc). You have an example with Stable-Baselines3 here: https://stable-baselines3.readthedocs.io/en/master/guide/examples.html#sb3-and-procgenenv
+
+- [VizDoom: a Doom like environment 🔥](https://github.com/mwydmuch/ViZDoom) Nicholas Renotte made a very good tutorial on how to train an agent playing it using Stable Baselines-3: https://youtu.be/eBCU-tqLGfQ
+
+Have fun 🥳
+
+### Keep Learning, Stay awesome