Asteroids

Spacebar = Fire
Left and Right Arrows = Rotate
Control or Up Arrow = Thrust
Down Arrow = Brake
J = Toggle Jitter Effect

If the keys don't work, click your mouse on the game.

The source for this game, which is almost entirely actionscript based, illustrates a number of techniques, including:

• Velocity-based movement (with inertia)
• Score keeping
• Storing the shapes of objects (rocket, rocks, flying saucer, etc.) in arrays.
• Using the information in this array to create an explosion effect.
• Text animation
• Jitter effect