Warhammer 40,000: Chaos Gate is a video game set in the gothic science fiction backdrop of the Games Workshop game system Warhammer 40,000. In it, players take command of a number of squads of Ultramarines under the leadership of Captain Kruger. They are pitted against the armies of the Chaos Lord Zymran, who commands the traitor marines of the Word Bearers and their daemonic allies.