Tom Clancy’s Rainbow Six Siege is a first-person shooter game, in which players utilize many different operators from the Rainbow team. Different operators have different nationalities, weapons, and gadgets. The game features an asymmetrical structure whereby the teams are not always balanced in their choices of abilities.

- It was released on December 1, 2015, for Microsoft Windows, PlayStation 4, and Xbox One.
- The game is set in a near-future where terrorist organizations have become increasingly sophisticated. Players take control of members of the Rainbow Six team, an international counter-terrorist unit, as they defend or attack locations against other players or computer-controlled opponents.
- The game features a variety of game modes, including a 5v5 multiplayer mode, a terrorist hunt mode, and a co-operative story mode.
- Rainbow Six Siege has been praised for its realism, tactical gameplay, and competitive multiplayer. The game has also been a commercial success, selling over 80 million copies worldwide.