It's a neat concept, although a bit confusing at first. I liked how the mechanics were introduced, however for a game jam game they should have definitely come in faster. I didn't finish the game because I have other games I need to play too and I wish I'd been able to see more of the mechanics. I liked the gameplay, placing objects got a bit monotonous at times but it was fine and I liked the simple graphics. All in all, nice job!