I like that the art is hand drawn and that you have the ability to destroy the platforms. The wobble when you land is a really nice touch, although I think if it were subtler it would be a bit better. You got some good sounds and being able to upgrade the pickaxe is awesome. The main thing I can think of that could improve the game is if you could do a little jump with the up key. Overall, you put together a good game and it's fun to play