Microsoft Game Studios and Bungie Studios today confirmed the multiplayer beta of "Halo 3" will debut to audiences worldwide via Xbox LIVE on May 16 at 5 a.m. PDT and run through June 6 at 11:59 p.m. PDT.

Coming exclusively to the Xbox 360 console this fall, Halo 3 is the highly anticipated third chapter in the groundbreaking Halo trilogy from legendary developers Bungie. Halo 3 lets gamers experience Master Chief's greatest battle as he launches an epic mission to stop the Covenant, destroy the impending Flood threat and ultimately save mankind.

Starting May 16, gamers who secured their admission to the multiplayer beta either through the "Rule of Three" promotion or by purchasing a specially marked copy of "Crackdown" for Xbox 360 will be able to don their Spartan armor, download the beta on Xbox LIVE, and jump online using their Xbox LIVE Gold account to battle other gamers from around the world.

When gamers gather online to play the multiplayer beta via Xbox LIVE in May, they will be treated to three richly detailed, action-oriented maps: Snowbound, High Ground and Valhalla, which represent a mixture of large- and medium-scale combat environments and are brand-new to Halo 3. Each map will test gamers' mettle as they are placed behind the controls of new Halo 3 vehicles such as the agile Mongoose all-terrain vehicle, and armed with deadly weapons such as the new and improved Assault Rifle, the ferocious Brute Spiker, the devastating Spartan Laser and the treacherous new Spike Grenades. This is just a taste of what gamers will experience later this fall when Halo 3 goes on sale.

Gamers worldwide who did not participate in the "Rule of Three" promotion but are interested in joining the multiplayer beta of Halo 3 can still participate through the purchase of the critically acclaimed Xbox 360 title "Crackdown," which was launched in February.