Halo Online

Halo Online, an all-new, free Halo multiplayer PC experience

Halo Online is powered by a highly modified version of the Halo 3 engine and optimized for smooth performance on lower-end PCs. While there's no campaign mode, Halo Online is set on a secret UNSC space installation called Anvil, where Spartan-IV soldiers train together in war exercises to sharpen their battle skills and test experimental technology.