Rainbow Six 3: Iron Wrath
"The lasting appeal of Iron Wrath will lie in its new multiplayer modes. The Free Backup mode is basically just a deathmatch mode where each player can have up to three AI teammates fighting alongside them. The Limited Seats mode has the players running prisoners to a safe zone on the other side of the map; if even one is killed, the mission is over. The Virus mode requires one team to upload a disc at a certain terminal. If a player holds the disc too long before passing it off to another player, they'll become visible to all the enemy players on the map. Gas Alert is another interesting mode. Here each player gets a 30-second air supply that must be replenished at a number of terminals scattered across the map.
By far the most interesting of the modes is Intruder. In this case, one team is tasked with destroying three terminals defended by the other team. Here's the twist: one member of the attacking team is dressed in the defending team's uniform (although with a different color helmet). This player is the Intruder and can demolish a terminal in a matter of seconds. Knocking the intruder out of the game becomes a high priority for the defenders."