Sweet little game. I agree with some of the comments about gameplay. However, weirdly I found myself hooked for much longer than I expected. I think moving it over to a points system which is displayed to the user at the end of the game would be more favourable. Having mice worth different amounts (golden rat etc.) That way it could incentivise players to make decision on which mice to focus on. I think powerups could be great in this. Super size or temporary mice run away you, a lot of potential. Overall, really good work. Well done.