Nice game. There is no incentive to click on the propeller as it usually results in death. I found the first level was the only one I could use the propeller. A timer might encourage people to use the propeller. The angle should be determined by how long the player holds left or right. Could make the angle rotate faster the longer it is held, Would like the turning a little less jarring. I enjoyed the game and played through it a couple of times :)