If they get boxed in, they will spiral to their own demise.
To make them disappear, the player must restrict the area in which they move by surrounding them. If one cycle crashes, the others remain until they are trapped and crash, one by one. Likewise, if they crash into anything, they disappear. They are like the player except for that the computer controls them. The other cycles: violet, green, and blue, also move in a similar way. If the player crashes into anything, their cycle is 'zapped', even if they crash into their own trail. Wherever they go, they leave an orange trail.
The player control's an orange line with a 'cycle' in front of it that can move up, down, left, or right. The objective of the game is to earn points by surrounding and eliminating opponents, the 'light-cycles'. Quasar is a snake game written by Jonathan Dubman for the Apple II and published by Aristotle Software in 1983.
