Operation Chain Reaction expands Rainbow Six Mobile with a fast-paced, coordinated offense, new operator tools, improved learning and communication mechanics, and enhanced competitive visibility.

Patch 2.2, Chain Reaction, addresses community wishlist with major gameplay and quality-of-life changes rather than a typical seasonal update, including Fuze’s introduction and broader QoL improvements that could shift the competitive landscape.

Rook receives a rework with Armour Plates that guarantee a DBNO state against most damage, clarifying the gadget as a defensive asset.

User interface upgrades boost team-readability, featuring operator names above allies, updated ally portraits, highlighted injured teammates, armor values on the top bar, and a visible DBNO timer to aid saves.

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

A Battle Pass introduces cosmetics, progression rewards, and tier unlocks, with premium pass holders gaining immediate access to Fuze.

A redesigned Training hub consolidates Map Training, Shooting Range, tutorials, and onboarding surveys to tailor guidance for players of all levels.

Fuze debuts as an attacker with a Cluster Charge that breaches defenses, plus a limited-time Showcase mode to practice his abilities before ranked play.

Ranked progression is reworked to emphasize individual performance, boost MVP/SVP rewards, increase match score impact, and reduce grind with adjusted shield needs and promotion thresholds.

Additional minor improvements include more consistent friendly fire, improved gadget feedback, new scoring events, better hit registration, cross-platform achievements, and various UI and bug fixes.

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

New limited-time modes encompass Fuze Showcase (2v2 Bomb on House with Fuze unlocked), Most Wanted (a multi-week mode with location reveals for the top killer), and a streamlined 3v3 Bomb mode with rotating maps.