It is soooo satisfying to play it! This game has a somewhat soothing effect on me; I can play it for a long time just for the sake of playing even without progressing through levels.
What would make the game even more satisfying is the ability to create long rectangular shapes (for some reason the long triangles are created instead). I wanted to block the death walls just to experiment with the music by placing some random shapes in the center to get a lot of bounces