Halo 3

Another four titles have joined the ever expanding Xbox Backward Compatibility program, including Halo 3 Halo 3: ODST and Halo: Combat Evolved Anniversary (disc only).

The epic saga continues with Halo 3, the hugely anticipated third chapter in the highly successful and critically acclaimed Halo franchise created by Bungie. Master Chief returns to finish the fight, bringing the epic conflict between the Covenant, the Flood, and the entire human race to a dramatic, pulse-pounding climax.

Halo 4

The Master Chief returns to battle an ancient evil bent on vengeance and annihilation. Shipwrecked on a mysterious world, faced with new enemies and deadly technology, the universe will never be the same. Enlist aboard the Infinity to experience Halo’s original multiplayer and Spartan Ops - innovative episodic fiction-based co-op missions.

Halo 3: ODST

Halo 3: ODST drops you into the world of the legendary Orbital Drop Shock Troopers as you embark on a dangerous mission to discover what was behind the Covenant’s attack on the city of New Mombasa. Halo 3: ODST’s gripping story and co-operative campaign will give all fans an exciting new perspective on the Halo universe.

Halo: Combat Evolved Anniversary

Halo: Combat Evolved Anniversary is a spectacularly remastered version of the original "Halo" campaign, created in celebration of the 10th anniversary of one of the most beloved franchises in gaming history. With a bounty of new features including cooperative play over Xbox LIVE, a bundle of some of the most beloved multiplayer maps in "Halo" history reimagined for Xbox LIVE, new challenges and a new story to uncover.

As always, you can find the complete list of backward compatible games here