Halo 2 is the sequel to Halo - the best-selling Xbox game from Bungie Studios. Halo 2's plot sees Master Chief and Cortana returning to Earth in an attempt to stop the onslaught of the Covenant, a terrifyingly aggressive alien civilization, bent on the conquest and destruction of any species that dares defy them. Master Chief will be called on to save the greatest prize in the Human colonies - Earth itself.

The sequel to Halo includes many of the features players have been begging for, including all-new graphics, new environments and locations, new weapons, vehicles and excellent support for user-created content that can be shared and enjoyed online. The well-known and well-loved Halo 2 gameplay should ensure that the game continues to entertain and involve players for a long time to come.

New features like dual-wielding, destructible environments and vehicle boarding change the Campaign and Multiplayer modes dramatically, while still retaining the core gameplay that made Halo an Xbox and PC favorite. The highly involving game plot also features plenty of twists and surprises. Halo 2 was originally released on Xbox in 2004 and will be released worldwide for PCs running Windows Vista in 2007.