For something that looks so simple, it actually delivers a lot of great content with its cool levels and large number of interesting mechanics (and I actually like the goofy way our hero just rotates as he flies). My only complaint would be that I felt some of the levels might be better reorganized to flow better: felt like the block pushing levels might be best left for the middle portion instead of introducing them so early: have the first levels just be flying around and managing fuel and switches. Game has some really cool levels that stood out to me, such as the boss fight and the level with the two blocks synchronized rising like a race: reminded me a bit of I Wanna Be The Guy. Also loved the varied music which was a treat for each level!