Interplay is a game developer and publisher which is still active today. Their list of game series (developed and/or published) includes the Battle Chess series, the Fallout series, the Descent series, the Star Trek series, and many others.
Official Interplay Entertainment website
Interplay Entertainment's Mobygames page
Interplay Entertainment's Wikipedia page
Games developed and/or published by Interplay Entertainment
Carmageddon (1997)
Descent II (1996)
Whiplash (1996)
Blackthorne (1994)
Descent (1994)
Jack in the Dark (1993)
Lost Vikings, The (1993)
Castles II: Siege & Conquest (1992)
Mario Teaches Typing (1992)
Lexi-Cross (1991)