I know this is a 0.5.5, aka an early build, but just a couple of quick reccomendations: put in a way to quit the game without having to alt+f4, and create a killfloor right under the floor of the various platforms, with a quick respawn at the start of the level. Another quick note on the UI, and that is that the segmented units under the spells seem to express a different function than the intended one: visually the don't communicate multiple uses of the same spell, but instead strength, duration or area of influence, hinting that a spell with 2 full segments under it is more powerful than one with just 1 full segment. This said, can't wait to see a more defined form of this one. Great work!