If you failed to geet a beta invite for “Halo 3” during the first round, it appears that you’ve got another shot. All you have to do is log three hours playing Halo 2 online between Thursday, Feb. 1, 2007, 12:01 a.m. EST and Feb. 3, 2007, 11:59 p.m. EST. The first 13,333 people to do so and signup at the Halo 3 site will get a beta invite.If that doesn’t work for you either, there will also be beta invites provided with “Crackdown,” which comes out Feb. 20.
Play Halo 2, get invited to Halo 3 beta [Joystiq]