Each map is designed to be close-quartered oriented, and have an emphasis on verticality and destruction. Each map features multiple locations for both the Attackers and Defenders to choose from, greatly increasing the importance in conducting surveillance. The game features the 'three main pillars' - teamwork, tactics, and tension. This is done through setting up Reinforced Walls and Barricade around the area as well as deploying unique abilities to help defend the area such as with Bandit's Shock Wires or Mute's Signal Disruptors. Defenders, on the other hand, have the ability to fortify their location and prepare for the inevitable assault by the Attackers. Attackers start each round with 45 seconds to send a Drone to survey and detect items in the environment, allowing players to find enemies and targets and mark them. As such, it is extremely important to communicate with teammates and plan assaults when attacking or defense when defending. Matches are conducted in a 5v5 manner, with each player only receiving one life per round. Customization items, such as weapon skins and Operators themselves are obtained through earning and spending Renown. Each Operator features a selection of different weapons, abilities, and equipment. Only one Operator may be chosen from each specialty per round and cannot be changed until the round is over. Tom Clancy's Rainbow Six Siege offers dozens of different Operators to choose from, each hailing from multiple Counter-Terrorist Units from across the world. In 2018, Aurelia Arnot resigned from the position of Six and was succeeded by Harry Pandey. Under the leadership of Aurelia Arnot, Operators were gathered from all across the world.ДЄfter successfully stopping a biochemical attack on Bartlett University, Six performed a eulogy for those who had lost their lives in the attack and many like it but also told of how Team Rainbow was back and that they would be ready to defend the world where needed. With their ultimate objective unknown, they become a large enough threat that Team Rainbow was reactivated. One such organization, the White Masks, came into prominence in 2015 by spreading chaos all across the world, sharing no discrimination with who they terrorize. In their absence, many new terrorist organizations emerged as a result. Team Rainbow has been deactivated since 2012.

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