Fun game! I enjoyed the animated effects on the walls. The particles and screen shake when pushing a mouse out of bounds felt very satisfying. If you wanted to improve, I suggest some form of score system with a multiplier for getting multiple enemies out in quick succession. I also recommend making the player use multiple doors to get rats out, I camped one door the entire game and just kept pushing them out. Making the enemies run from the player instead of be pushed could be a way of doing this. Overall, super fun game!