Viability: Needs some work with the movement, and I got stuck on geometry here and there. I like the idea of hopping from place to place however.
Presentation: I like it so far, I like the cave look. It's simple but cute. The cube character should be traded out at some point though,
Theme: A Cave explorer, where there is more of a focus on how you explore than actually beating each level.
Engagement: The cave has a non-linear story. Cant wait to see more from this game.