As Rainbow Six Siege X tournaments go, you aren’t going to get any bigger than the Six Invitational. While it starts at the beginning of 2026, the Six Invitational acts as the end of the previous year, as well as an informal, annual World Cup.
As such, the Six Invitational is in its own tier, being the biggest event in the R6 Siege esports calendar. With this scale, it is hosted by R6’s developer and publisher, Ubisoft, where the best teams from around the world come to compete for the biggest prize Rainbow Six esports has on offer.