I really like the graphics. If you add sound at a future release, this would definitely improve the game a whole lot than it already is. Please add to your game description that you can change your energy distribution, as energy panel as word doesn't quite convey the info, otherwise later levels seem unsolvable and people may give up before trying tab. I also left some comments behind on bugs I've found.
Playing around with the energy level later on is really fun, though the enemies could be a bit harder, and the loot be more obvious how much space they take, though I guess this is due to lack of time during the jam. Still, I really like the world selection screen.