Nice game, I liked the simplistic art style. The sound effects sound very meaty, which is nice, but I felt like the game was missing some music or ambience - maybe getting the sliding and pushing contraptions to constantly make some background noise would make the game feel more alive. The levels didn't seem to have a very coherent flow, and seemed more like putting the contraptions together in cool-looking arrangements. But overall, it was still an enjoyable experience. (I hope you don't mind the brutally honest feedback, like I said I still enjoyed your game.)