Must-Have Xbox 360 Exclusives
This year, the hottest games will be found exclusively on Xbox 360, including the next chapters of top franchises such as Gears of War, Fable, and Ninja Gaiden, as well as new titles such as Too Human™.

• Gears of War 2 (Epic Games): Gears of War 2 is the sequel to the 4.5 million-selling blockbuster that redefined the third-person tactical action game genre. Gears of War 2 continues the story of Marcus Fenix and Delta Squad in an epic saga of survival, loss and retribution. Developed by Epic Games exclusively for Xbox 360, Gears of War 2 launches this November.
• Fable 2 (Lionhead Studios): In addition to the dynamic co-op mode unveiled onstage, Peter Molyneux also announced that Carbonated Games is bringing the Fable 2 experience to Xbox LIVE Arcade. Before the game's launch, get an early taste of the Fable 2 experience and gain a head start on earning currency for use in Fable 2 by playing Fable 2-themed pub games, available for download from Xbox LIVE Arcade. The currency earned in these Xbox LIVE Arcade titles will let you to purchase items in Fable 2 when the game launches later this year.
• Ninja Gaiden 2 (TECMO/Team NINJA): Tomonobu Itagaki debuted several tantalizing new Xbox LIVE features of Ninja Gaiden II, including the ability to capture and share videos of your glorious battles via the Ninja Cinema feature and upload them to Xbox LIVE. Ninja Gaiden II launches worldwide this June.
• Too Human (Silicon Knights): Microsoft also showcased the epic action game Too Human from renowned Canadian developer Silicon Knights at a media event before today's keynote address. In Too Human, you are treated to a nonstop barrage of action powered by the seamless integration of melee and firearms combat, plus deep role-playing elements fueled by breathtaking visuals enabled by the power of Xbox 360.

More information at the GDC site here