Reactor: Chain Reaction Game

One small move can change the whole arena. Reactor: The Ripple Effect is a colourful turn-based chain reaction strategy game about building atoms, setting off chains and taking over the board. Place an atom in an empty cell or one you own. When a cell reaches its limit, it bursts into its neighbours and captures their atoms. Set up your next move, protect your territory and watch the ripples unfold. LEARN BY PLAYING New to chain reactions? A skippable, interactive tutorial guides you through ten scenarios with real moves. Revisit it whenever you need a refresher. Chain Lab gives you compact takeover challenges to solve. YOUR ARENA, YOUR WAY Play solo against Reactor AI, share one screen in local pass-and-play, or create an online account with a unique username. Invite friends by username and enter friendly rooms together. FOUR ONLINE FORMATS Choose a one-on-one duel, two-versus-two teams, three-player free-for-all or four-player free-for-all. Each format has its own ranks and leaderboard. MAKE EVERY SECOND COUNT Pick Spark at 1+1, Surge at 3+0 or 3+1, or Orbit at 10+0 or 10+1. These are total player time banks in minutes, with optional one-second increments after moves. Online clocks are managed by the server. EARN YOUR PLACE Climb seven ranks and compete for the 100 Singularity seats in each format. Wins earn points; losses cost points and can bring you down a rank. Lower-rank protection helps you learn. After each rated match, animated progress shows your points, with a cinematic badge reveal when you move up. A CLEAR START New players in Spark can choose up to three rated bot introductions per format. You are told before you play a bot, can choose real rivals instead, and the same ranked point and protection rules apply. Bots never take leaderboard seats. ONE MORE RIPPLE After a human match, offer a rematch. A fresh game starts only when every player accepts. If someone declines, find new rivals with the same format and clock, or head back to the menu. FEEL THE CHAIN Enjoy vivid atoms, flowing reactions, sound effects, optional vibration and reduced-motion controls. The reaction stays a surprise until it happens. One purchase. No ads. No paid rank boosts. Solo, local play and the tutorial work offline without an account. An internet connection and an email-and-password account are required for online play. Google Play manages updates for this edition.

Learn by playing with an interactive tutorial. Join ranked duels, teams or free-for-all with your chosen clock. Try clearly labelled, limited bot introductions. Enjoy faster online feedback, clean text, animated rank progress and rematches when everyone accepts.