Expand All / Collapse All View games developed by Sierra Studios 3DO: Stellar 7 Draxons Revenge PC: Arcanum: Of Steamworks & Magick Obscura Caesar III Civil War Generals 2: Grant - Lee - Sherman Cleopatra: Queen of the Nile -- Official Pharaoh Expansion Command: Aces of the Deep Demon Isle Eat My Dust Empire Earth Empire Earth: The Art of Conquest Front Page Sports: Ski Racing Gabriel Knight: Sins of the Fathers Ground Control Ground Control: Dark Conspiracy Half-Life: Adrenaline Pack Half-Life: Blue Shift Half-Life: Counter-Strike Half-Life: Game of the Year Edition Half-Life: Initial Encounter Half-Life: Opposing Force Half-Life: Platinum Half-Life: Team Fortress Hero's Quest: So You Want to Be a Hero Homeworld Homeworld 2 Homeworld: Cataclysm Homeworld: Game of the Year Edition Hoyle Classic 2 Inca II Jones in the Fast Lane King's Quest: Mask of Eternity Lords of Magic: Special Edition Mixed-Up Mother Goose NASCAR Acceleration Pack NASCAR Racing 4 Orcs: Revenge of the Ancients Phantasmagoria Stagefright Pharaoh Police Quest: SWAT Force Quest for Glory V: Dragon Fire Red Baron/A-10 SWAT 3: Close Quarters Battle SWAT 3: Close Quarters Battle -- Elite Edition SWAT: Career Pack Team Fortress 2: Brotherhood of Arms The Great Civil War The Great Empires Collection Tribes 2 Viper Racing Zeus: Master of Olympus Xbox: Jonny Drama Sega Dreamcast: Half-Life Atari 400/800/XL/XE: Lunar Leeper Threshold Hybrid Windows/Mac: Lighthouse Playtoons Featuring Uncle Archibald Playtoons:The Case of the Counterfeit Collaborator Macintosh: Gabriel Knight: Sins of the Fathers Half-Life Heart of China King's Quest VII: The Princeless Bride Lords of the Realm II MacPak NASCAR Racing Outpost Police Quest 4 The Beast Within: A Gabriel Knight Mystery The Lost Mind of Dr. Brain