This has a simple and interesting mechanic to play with. Visuals and audio fit pretty nicely together. The song was long enough to not feel like it's getting repetitive, which is always welcome. I wish you explored the mechanics a little quicker. It felt like the first half of the game could have been greatly condensed to let players get to the newer mechanics without the risk of becoming bored. I did finish the game and escape into the void --- but I think this game would have felt much better with about half as many levels. Please don't take that the wrong way, because I think the mechanics are quite good and well explored. This is a solid pseudo-platformer/sokoban sorta game. Well done.