Posted by Agent Davis on 12, 2001 at 8:50 AM:
In Reply to: Trackballs posted by Joshua on 12, 2001 at 6:54 AM:
Centipede uses a 2 1/4" trackball as well as many others (I could be wrong about centipede). I know a lot of games use one or the other though. Missile Command on the other hand uses a 3" ball. It's just a matter of preference.