You play as the Space Ship on the left, your goal is to survive as long as possible while getting the highest score you can.

There are three types of enemy, one that moves forward in a straight line, one that moves up and down then forward, and one that moves in a straight line while shooting at you.

There are four power ups that you can collect:
Blast - Your next bullet will explode if it hits an enemy

Boost - Allows you to move much faster than normal

Laser - Lets you fire a laser that instantly destroys any enemies it hits

Rapid Fire - Lets you shoot much more frequently than usual for a brief period of time

Controls:
W/↑ - Move up
S/↓ - Move Down
Space - Shoot
Shift - Use Boost/Laser