Tom Clancy's Rainbow Six Siege - PC The Rules of Siege: Five versus Five. Infiltrate versus Fortify. Team-based strategy meets intense, tactical combat. World's Elite Counter-Terrorist Operators: Choose your Operator. Wield their power. Unique abilities allow you to Attack or Defend your way. Singleplayer, Multiplayer, or Co-op: Terrorist Hunt is back! Stop the White Masks terrorist threat alone or with friends. Upgrade to Gold Edition: Includes game and Season Pass, which gives all fans and newcomers an extended Rainbow Six Siege experience.