Infection

Infection is an unconfirmed multiplayer gametype in Halo 3, discovered by beta source code hackers. It is hypothesized that it consists of Flood infected units fighting against the player. The object of the game is to survive the Flood infection--a variation on the multiplayer game Zombies, but enforced by rules instead of the honor system.

The Zombie gametype pits a "zombie" or "infection" team against "uninfected" teams. The goal of the uninfected teams is to survive to a time limit; the goal of the infection teams is to infect uninfected players, who respawn as members of the infection team. Other details are so far the subject of rumor.