Miswalker-Blue Dragon, Lost Oddessy
Reatime Worlds- Crackdown
Bizarre Creations- PGR, BoomBoom Rockets, Geometary War
ACES Game Studio — Flight Simulator series, Combat Flight Simulator series and the upcoming Train Simulator 2
Carbonated Games — Hexic, 7 Hand Poker, UNO, Aegis Wing
Hired Gun — Halo 2 for Windows Vista
Wingnut Interactive — A new studio set up in conjunction with Peter Jackson (they will be producing alongside with Bungie Studios a new game based in the Halo universe)
Massive Inc. — A studio primarily set up for in game advertising.
ACES Game Studio — Flight Simulator series, Combat Flight Simulator series and the upcoming Train Simulator 2
Bungie — Halo series, Myth series, Marathon series
Carbonated Games — Hexic, 7 Hand Poker, UNO, Aegis Wing
Ensemble — Age of Empires series, Age of Mythology series, Halo Wars
FASA Interactive — Shadowrun, Crimson Skies, Mechwarrior series
Hired Gun — Halo 2 for Windows Vista
Lionhead — Black & White series, The Movies, Fable series
Rare — Goldeneye 007, Perfect Dark series, Kameo, Killer Instinct series, Banjo series, Viva Pinata
Turn 10 — Forza Motorsport series
Wingnut Interactive — A new studio set up in conjunction with Peter Jackson (they will be producing alongside with Bungie Studios a new game based in the Halo universe)
Massive Inc. — A studio primarily set up for in game advertising.