CP system, CPS-1, or Capcom Play System 1 is an arcade card made by Capcom that debuted in 1988 with Forgotten worlds. Street Fighter II, one of the most important and famous fighting games of the genre, used this plaque.
The system was plagued by the amount of bootlegs (contraband versions with modified graphics or gameplay) of their games. In particular, there were many bootleg versions of Street Fighter II, being more common to find a version bootleg in recreational centers that an official version. This problem was later eliminated by Capcom taking out the CPS-2.