The crystals are a cool gimmick, allowing for some cool platforming. Controls are quite annoying, which is quite bad for platformers. Level design is mostly alright, but not very interesting (lack of decoration, different obstacles) But I do like how how you can take shortcuts by pressing shift at certain points. Game is a bit unpolished in some aspects, infact there is a glitch that lets you climb up walls, (the inputs are decently precise to be fair) using this I was able to beat the game having only pressed shift twice :p. Music and art are a bit lacking, but for 72 hours, this is a solid enough game with alot of charm to it.