The CPS Changer was a console system made by Capcom and based on the CPS arcade hardware. To put it quite simply, it sucked in all the right places. The only games ever ported to the system were CPS arcade games, and Street Fighter Zero which was just a trimmed down CPS-2 game. As far as I know, the CPS Changer never hit American shores, simply European and Japan markets. As far as I'm concerned, it's best feature was it's ability to play Street Fighter 2, which already existed on just about ever console anyway.