How To Play

• In all versions of space invaders the goal is the same.
• Shoot all of the aliens without getting shot yourself.
• The aliens move from side to side on the screen.
• Each time they reach one side or the other they drop down one level.
• If they reach the bottom of the screen, you are dead
• Special bonus ships will fly accross the top of the screen offering you extra points.
• The fewer aliens there are on the screen, the faster they will move accross the screen.
• Your best bet is to reduce the number of columns of aliens before you reduce too many rows. This will help slow their progress down the screen.

Playing The Online Version

• Arrow up or space - Fire
• Arrow down or M - Fire a missile
• P - Pause on/off
• S - Start the game
• Left arrow - Move spaceship to the left
• Right arrow - Move spaceship to the right
• Escape - End the game currently playing
• Bonus lifes every 10000 points
• When the ufo passes - try to hit it, when you do you gain 1000 points and a new missile
• 500 points for completing each level
• The attacking spaceships may have one more bullet on the screen for each level, the game also moves faster
• You may have 6 bullets on the screen at any time (and only one missile)