The Halo: Reach multiplayer beta is due to start on the 3rd of May and to gain access players must have a copy of Halo 3: ODST, a title which was released last year.
For this reason, Microsoft are extremely confident that Halo 3: ODST will see a significant sales boost in the next few weeks.
Speaking to CVG, Stephen McGill of Microsoft said "Naturally, the demand for Halo 3: ODST will be reinvigorated as soon as the public Beta kicks off. We know a lot of our Halo community have the game and are eagerly awaiting May 3rd, but there are also a ton of Halo gamers who know and love the Halo universe, yet didn't try Halo 3: ODST."
Halo 3: ODST is now retailing at the reduced price of £24.99 in the UK.