Bungie announces the development of Halo 3: ODST as a standalone title in the Halo series.
Halo 3: ODST is released worldwide for the Xbox 360 console.
Halo 3: ODST was bundled with early access to the Halo: Reach multiplayer beta, giving players access before official beta launch.
Halo 3: ODST becomes available on Xbox One through backward compatibility, allowing a new generation to play the game.
Orbital Drop Shock Troopers (ODSTs) deploy into New Mombasa to respond to a Covenant invasion.
Covenant forces launch a major assault on the city of New Mombasa, causing widespread chaos and destruction.
ODSTs attempt to regroup at their designated rendezvous point, Overlook, but are scattered by the Covenant attack.
The team uncovers a mysterious Covenant artifact buried in New Mombasa called the Vault, which is the source of a city-wide blackout.
The ODSTs investigate the blackout affecting New Mombasa to understand its cause and restore city operations.
ODSTs engage Covenant forces aboard a massive carrier ship orbiting New Mombasa.
Following the destruction of the city infrastructure and increased Covenant presence, remaining ODSTs execute an evacuation.
