Operation Chain Reaction expands Rainbow Six Mobile with a fast-paced, coordinated offense focus, introducing new operator tools, clearer competitive ranking visibility, and enhanced learning and communication features.

Operation Chain Reaction is live, adding the new Operator Fuze, limited-time modes, and updated progression systems designed for rapid, tactical play.

The Vault returns in weeks one and five, offering exclusive cosmetics from the new Riptide collection and Obsidian currency to trade for Vault Packs, along with Vault challenges to earn currency.

The update includes a Battle Pass with cosmetics, progression rewards, and tier unlocks, with premium pass holders gaining immediate access to Fuze.

Quality-of-life additions include a Ping Wheel for quick in-game communication, Top 200 Leaderboards for competitive play, and a dedicated Training mode for offline practice.

New limited-time modes include Fuze Showcase (2v2 Bomb on House with Fuze available to all players), Most Wanted (a multi-week mode where the first killer earns the title and reveals their location), and a streamlined 3v3 Bomb mode (weeks three to five) with weekly map rotations.

Fuze is an attacking Operator armed with a Cluster Charge that can be placed on walls and releases five sub-grenades through walls when activated, enabling aggressive pushes and forcing defenders to rethink positions.