Digital Extremes, founded by James Schmalz, are the developers of the classic Epic Pinball / Silverball / Extreme Pinball games who would later go on to develop the Unreal game/engine and several of the original Unreal sequels before Epic Games acquired the rights. Today they concentrate on their Warframe series of games.
Digital Extremes's Mobygames page
Games developed and/or published by Digital Extremes
Epic Pinball (1995)
Extreme Pinball (1995)