'Halo 3 Recon' 3-5 hours long

Forthcoming Xbox 360 standalone expansion Halo 3 Recon will be three to five hours long, it has been revealed.

The standalone expansion to 2007's Halo 3 will be shorter than previous Halo titles and will have a budget price, according to Game Informer.

There is also speculation that the game will unlock the rare Recon armour for Halo 3, providing that the player has all three Vidmaster achievements.

Halo 3 Recon is a new campaign set before the events of Halo 3, playing as ODST troopers fighting Covenent forces on Earth.

The expansion will be released late next year.