- "Rainbow Six Siege has now been live for five years and with any anniversary comes a celebration and a look into what we have managed to accomplish. This year is a milestone to mark with style and what better than to take a step back to where it all began?"
— Official Website
Legacy is a limited-time gamemode introduced to Tom Clancy's Rainbow Six Siege in the Operation Neon Dawn expansion. Playable in the Arcade playlist, the mode is available from December 17th, 2020 to January 5th, 2021.
This Arcade mode features the Bomb gamemode with the same rules as Quick Match. It features three classic maps prior to their reworks: Hereford Base, House, and Presidential Plane. Players may only select the 20 original Operators that were available during the game's initial release. Each Operator features the same loadout of weapons and gadgets as they did in December 2015. This includes gadgets and weapon attachments such as the ACOG sight for Ash's R4-C, Bandit's MP7, and Jäger's 416-C Carbine. The only exception to this rule is Tachanka and the Recruit who retain their reworked loadouts and abilities.
The mode limits players to choosing between 11 Attackers and 11 Defenders.