Microsoft kicked off their conference with the official reveal of Halo 4, including live gameplay.

Players once again take control of Chief after the events of Halo 3, seemingly featuring more close-quarters environments and slower, more suspenseful gameplay than its balls-to-the-wall predecessors, and a slew of new enemy types. Chief and Cortana also appear to have consistent conversations throughout gameplay, breaking ol' John's silence like never before.

Check out the official E3 screenshots on Microsoft's official site here, and watch the conference trailer/gameplay footage below:

http://youtu.be/1Em1MiiqT9A