I really like the game mechanics. Also the music and sound effects are great. What spoiled it a little bit for me was the "getting stuck" part. After a few times I learned that you couldn't move the blue square after you used the hook and had to press E. Then that's how I used it. But a bit later I got stuck for real, so that neither of the squares could move. I'll still give you a good rating because I think it is great overall.