Use the mouse, keyboard, or gamepad to control the ship. Holding the left mouse button or button 1 will reduce you to half speed.

Score and difficulty are both controlled by your rank. The longer you go without being hit, the faster your score will increase, but the more difficult the game will become.

Pressing right mouse button or button 2 will deploy a bomb, clearing the screen of bullets. Using a bomb incurs a rank penalty, but only half as much as being hit. You start the game with one bomb and gain one per minute.

If you selected a blitz skin, your rank will increase twice as fast, and the rank cap has been increased to 45, but the penalty for being hit has been tripled. Play well and aim for high scores!

If you selected an iron skin, you have a limited supply of lives, but you receive a 25% bonus to your final score...if you survive to the end.