Microsoft has no plans to release Halo on Steam

Microsoft currently does "not have plans" to release any of the Halo games on Steam, according to an official statement from Microsoft provided to GameSpot.

Halo: Combat Evolved, Halo 2 and Halo 3 were recently discovered in a public version of the Steam Database, suggesting that all three titles might be headed for Steam release. A Steam Community Hub for a Halo 3 was also spotted, but later removed.

Of the other games listed, Dyad has since been confirmed for a Steam release.

Halo: Combat Evolved and Halo 2 are already available on PC. Halo 3, however, remains an Xbox 360 exclusive.