This was really interesting to play. I dont think I have ever played something like this.
The levels were pretty well designed and not too hard to figure out. The game mechanic was really cool too. Im still wondering how you managed to pull it off.
My only negative feedback would be is that it really needs some music I think. The sound effects do what they need to but something needs to fill the silence in between.
The graphics were simple and did what they needed to. Everything had its purpose clear by their visuals.
Overall really nice experience!