Rip-Off is a top-down vector shoot `em up arcade game released by Cinematronics in 1980. It is the first shoot `em up arcade game to feature cooperative gameplay and to exhibit `flocking` behavior. ==Gameplay== The objective of Rip-Off is to prevent computer-controlled enemies from stealing eight canisters set in the center of the screen for a... Found on http://en.wikipedia.org/wiki/Rip-Off