• Buffy the Vampire Slayer (The original Xbox-exclusive title lacks multiplayer, but is far superior to the multiplatform sequel)
• Fahrenheit/Indigo Prophecy
• Mortal Kombat: Armageddon
• Psychonauts (go buy this game! Buy it now!)
• Soul Calibur 2 (Best. Fighting Game. Ever.)
• Ultimate Spider-Man

This brings it up to more than 300 games, so what's still missing?

Um, TimeSplitters 2, which I would think would net them that title, AND TimeSplitters: Future Perfect, AND Second Sight. Oh, and Hunter: The Reckoning, and Hunter: the Reckoning -- Wayward. And both X-Men Legends games.

Here's the full list of recent updates, and you can get the complete list at XBox.com:

• Buffy the Vampire Slayer
• Burnout 3: Takedown UPDATED
• Conker: Live and Reloaded
• Dead Or Alive Ultimate
• Destroy All Humans!
• Dynasty Warriors 4 / Shin Sangokumuso3
• Evil Dead: A Fistful of Boomstick
• Ex Chaser (Japan Only)
• Family Guy
• Far Cry: Instincts
• Fahrenheit/Indigo Prophecy
• I-Ninja
• Leisure Suit Larry: Magna Cum Laude
• Mortal Kombat: Armageddon
• MotoGP
• Incredibles/ Mr. Incredible (J)
• Muzzle Flash (Japan Only)
• MX Unleashed
• Open Season
• Pariah
• Plus Plumb 2 (Japan Only)
• Psychonauts
• Psyvariar2 Extend Edition (Japan Only)
• Rainbow Six: Lockdown
• Rapala Pro Fishing
• Rent-A-Hero No. 1
• (Japan Only)
• Scarface
• Shark Tale
• Shenmue II
• Soul Calibur 2 North America only
• Splinter Cell: Double Agent
• Tenerezza (Japan Only)
• The SpongeBob SquarePants Movie
• Ultimate Spider-Man
• Wakeboarding Unleashed: Featuring Sean Murray
• Whacked!
• Winback 2: Project Poseidon
• Xiaolin Showdown