Level 1 is Normal. You can play the level if you push 'n' key. How to move the spaceship is pushing left and right of arrow keys. Level 2 is Hard. You can enjoy the level if you punch out 'h' key. But I didn't make it yet. Level 3 names Crazy. If you want to play it you should push 'c' key. However, I didn't make it too...I'm so sorrry...!
