The newest addition to the Halo franchise, Halo 3 ODST, has just been released for the Xbox 360. The new instalment has had high expectations thrust upon it, in a series that has sold 27 million copies worldwide and been played for a combined two billion hours.

Halo 3 ODST, which has been officially launched today, has had a huge amount of hype surrounding it in the months prior to its release and Microsoft has invested a large amount of time and money to ensure its success.

To help raise awareness of the new title, Microsoft held a series of events out at Sydney’s Cockatoo Island for media and fans, where a full sized working replica of the Xbox Warthog was on display, as well as a set from the now cancelled Halo movie.

One of the games developers, Curtis Creamer from Bungie Studios, was also in the country recently to promote the new game and run through some of the new features.

To help inspire sales of the new title, Microsoft has included three new Halo 3 multiplayer maps bundled with ODST, as well as the complete Halo 3 multiplayer experience on a second disc. The game will also act as a key to access the Halo: Reach multiplayer beta available at a later date.

Halo 3 ODST is exclusive to the Xbox 360 console and comes at an RRP of $99.95. In addition to this the Xbox 360 Elite console has now had a price cut and is available for a RRP of $449.