After you press the green flag, the plane follows your mouse. Press the left mouse button to shoot pixel lasers! The enemies will come from the right-hand side and try to cross to the left-hand side. Shoot them with lasers before they can do this. For every enemy that crosses the screen, you lose 10 HP. Be careful: if you touch an enemy plane you will destroy it, but you will also lose 20 HP! The amount of points you get for destroying an enemy is based on how far you have got in the game.
Coding and art (such as it is) both by @Calllack. Inspiration to have things flying at you from Galactic Attack by @Poosheku. Version History: 1.0 - Release. 1.1 - Added World Highscore and stopped lasers going through enemies. 1.2 - Made World Highscore visible, and added destruction of your plane and differing colours of enemy. 1.3 - Stopped Plane HP dropping below 0 (or tried to!). 1.4 - Heavily optimised. High scores reset.