From Wikipedia
Realtime Associates is an American video game developer and publisher. The company was founded in 1986 by David Warhol and a group of ex Mattel Electronics employees originally to create games for the Intellivision system. Since then, the company has developed and published over 90 games for various systems, including; the PlayStation 2, Xbox, Nintendo GameCube, Sega Saturn, PlayStation, Nintendo 64, Super Nintendo, Sega Genesis, Sega Pico, Nintendo Entertainment System, TurboGrafx-16, Game Boy, Sega Game Gear, Game Boy Color, and PC and Macintosh platforms.