Really cool game! I got stuck on the level with the battery and the 4 platforms, so I didn't see the whole game, but I really liked the content I did see. The only thing I would change is maybe to have it so you can scroll between the different blocks with the scroll wheel so you can just keep your mouse in the same position and switch blocks that way. Also maybe a hotkey for running/stopping so players could use that instead if they want to.