Nice idea but two points:
1. The rotate button functions just like left and right together sence there is no panelty for pressing it 3 times. So it does not add value that way.
2. On the last level there is this point where you deactivate the blue blocks but you don't go through the first one. I guess its because it didn't have the time to deactivate the collider yet. The think is this is not concistant. I think in a puzzle game, the player should have a fair chance to predict what's going to happen. Only my opinion though.
Overall, it's a nice little game.