I love the simplicity of this game concept. It's executed really well! I wished I could retry the current planet I arrived on instead of having to start from the first planet each time. I ended up playing the first level for most of my play time.
Hey, thanks for playing my game. Initially I planned the levels to have multiple planets, but didn't have time :) I agree with you. Maybe adding checkpoint on each planet will make it less frustrating. I'll try to fix this in my next update.