I really liked this game, and I played it to completion! I think the confined mechanic is really good and the upgrades are a neat addition, although I will say by the end of the game my character was pretty OP, with homing bullets that did massive amounts of damage with lightning speeds. I could just sit in the corner, use confine, shoot a *ton* of bullets, and they'd immediately clear a level. Though in the beginning, when I was actually using the movement and confine to get out of sticky situations it was really fun and I think this concept could certainly be expanded upon. The art is also really nice.