ClayFighter 63⅓ is a fighting video game developed and published by Interplay Entertainment for the Nintendo 64 (N64) video game console in 1997. Its title is a parody of other games released for the N64 at the time, many of which were popular franchises with "64" suffixed (such as Super Mario 64). A later version of the game, ClayFighter: Sculptor's Cut, released for rental only, is one of the rarest and most expensive N64 games. It, along with Rakugakids was one of the only 2D fighting games released exclusively for the N64.