| Console: | Microsoft Xbox 360 |
| TV Standard: | PAL |
| Release Date: | 2007-09-26 |
| Players: | 4 |
| Co-op: | Yes |
| ESRB: | M - Mature 17+ |
| Type: | Shooter |
Master Chief returns to a Covenant Dominated Earth on a mission to kill the final alien leader. Meanwhile, the Arbiter, Johnson, and Keyes form a loose alliance and escape from Delta Halo. The Covenant is ripped in civil war, and the Elites along with a handful of other alien races become sympathetic to the human cause. Delta Halo's impromptu dis-activation has brought all of the Halos to a "remote activation phase". They can be activated from a facility called the ark, which happens to be on Earth.
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