its a good game, but i encountered a couple of bugs, 1, some of the blocks were invisible, i got stuck on one of the puzzles just to find out that one of the blocks i had to jump on was invisible. 2 sometimes it seems you die for no reason, once i touched the side of the screen with no spikes in the way, and i died. and 3, on one of the levels, i died and was for some reason sent back to level 6. if these are fixed, i would give this game 5 stars