Use the LEFT AND RIGHT ARROW KEYS to move the worm around. Use the DOWN ARROW KEY to pause The UP KEY is just a key. Nothing special about it. Press SPACE if you die to restart your round. You can change modes by pressing E,H, and M for Easy Hard and Medium. One Downside! You can only change modes while in the middle of a game. I am working on this and trying to find a solution. Any helpful comments about this matter would be much appreciated. Thank you.