Just played the complete game, very fun, the graphics are perfect for the game boy era!
I loved how the gravity changes if you press X, it adds a different taste to the game, really enjoyed it
The walking controls seems a little slippery, not a big problem as player is on space, I think it's part of the mechanics.
The music is pitched a little too high, that makes playing it at a louder volume sometimes irritating, but not a very bad problem in my opinion.
I really loved it, fun to play!