This is so meta, I love it!
There's nothing wrong I can really point out about this game, other than, maybe, the first level with mouse was a bit uh... Too tight compared to anything else?
Other than that, neat idea, cute art, good music... And above all that, incredible humor! I enjoyed every second of this game (except that one level I mentioned of course lol) Poor mushrooms, they were so cute as a couple :(