For the first time in a Tom Clancy’s Rainbow Six game, players will engage in sieges, a new style of assault where enemies have the means to transform their environments into modern strongholds while Rainbow Six teams lead the assault to breach the enemy’s position. Tom Clancy’s Rainbow Six Siege gives players unprecedented control over their ability to fortify their position - by reinforcing walls and floors, using barbed wire, deployable shields and mines, and more - or breach the enemies’ using observation drones, sheet charges, rappelling, and more. The fast pace, lethality and uniqueness of each siege sets a new bar for intense firefights, strategic gameplay and competitive gaming.

Tom Clancy’s Rainbow Six Siege also features a technological breakthrough that redefines the way players interact with a game environment. Leveraging Ubisoft Montreal’s proprietary Realblast engine, Tom Clancy’s Rainbow Six Siege incorporates procedural destruction that is realistic and unscripted, meaning the environment reacts authentically, distinctively and dynamically, based on variables like the caliber of bullets or the amount of explosives used. This advance allows players to leverage destruction in meaningful ways. Walls can be shattered, opening new lines of fire. Ceilings and floors can be breached to create new access points. This ability to modify the level design in real time enables players to create new gameplay opportunities directly within the game level.

Ubisoft and Xbox Game Pass today announced 1v1 Now by Xbox Game Pass, a brand-new competitive format for Tom Clancy’s Rainbow Six Siege X, inviting players to test their individual skill in head-to-head matches.

The competition kicks off this December through Challenger Mode, with open regional qualifiers across EML, NAL, SAL, and APL.

Open to PC players aged 18 and over in eligible regions, 1v1 Now by Xbox Game Pass offers the Siege community an opportunity to compete solo, rise through leaderboards, and earn real rewards. The top four players from each regional qualifier will move on to the Finals, held live at the Six Invitational 2026 in Paris, with travel, accommodation, and expenses covered by Ubisoft.

Finalists will compete for a €5,000 total prize pool, with the grand champion crowned live on stage during the Six Invitational weekend.

"“We’re excited to launch this new tournament in partnership with Xbox Game Pass, bringing one of the most popular competitive trends in Rainbow Six Siege X directly to our players,” said François-Xavier Deniele, VP, Esports & Competitive Gaming at Ubisoft. “This activation will be a major moment for our community and a fresh way to celebrate the creativity, skill, and competitive spirit that define Rainbow Six Siege X.”

Registration opens today on Challenger Mode, and players can sign up in their regional qualifier starting December 1, 2025.

Tournament Schedule

• Phase 1 – Open Qualifiers: December 2025 (all regions)
• Phase 2 – Closed Qualifiers: January 2026
• Phase 3 – Finals: February 14–15, 2026, at the Six Invitational in Paris

Prize Pool

• 1st: €2,000
• 2nd: €1,000
• 3rd: €1,000
• 4th: €1,000

For complete rules, eligibility details, and terms, please visit the official 1v1 Now by Xbox Game Pass page on Challenger Mode.

Key Features

• Counter terrorist operatives are trained to handle extreme situations, such as hostage rescue, with surgical precision. As “short range” specialists, their training is concentrated on indoor environments. Operating in tight formations, they are experts of close quarter combat, demolition, and coordinated assaults.
• For the first time in Rainbow Six, players will engage in sieges, a brand-new style of assault. Enemies now have the means to transform their environments into strongholds: they can trap, fortify, and create defensive systems to prevent breach by Rainbow teams. To face this challenge, players have a level of freedom unrivaled by any previous Rainbow Six game. Combining tactical maps, observation drones, and a new rappel system, Rainbow teams have more options than ever before to plan, attack, and diffuse these situations.
• Destruction is at the heart of the siege gameplay. Leveraging Ubisoft Montreal’s proprietary Realblast engine, players now have the unprecedented ability to destroy environments. Walls can be shattered, opening new lines of fire, and ceiling and floors can be breached, creating new access points. Everything in the environment reacts realistically, dynamically, and uniquely based on the size and caliber of bullets you are using or the amount of explosives you have set. In Rainbow Six Siege, destruction is meaningful and mastering it is often the key to victory.

Tom Clancy’s Rainbow Six Siege is available on PS4, PS5, Xbox One, Xbox Series X|S and PC.