Reakto - Chain Reaction Puzzle

Reakto is a minimalist strategy duel built on one deceptively simple rule: fill a cell until it overflows, and it explodes into its neighbours — converting every orb it touches to your colour. One tap can cascade across the entire board. Learn it in ten seconds, spend weeks getting good at it. HOW TO PLAY • Tap any empty cell, or a cell you already own, to add an orb. • Every cell has a critical mass equal to its number of neighbours — 2 in a corner, 3 on an edge, 4 in the middle. • Reach that number and the cell bursts, sending one orb into each neighbour and capturing them. • Captured cells can burst too. Chains build on chains. • Own every orb on the board and the match is yours. PLAY THE AI Three difficulty levels, backed by a real minimax search — not a random move generator. Easy looks two moves ahead, Hard looks five. Corners are safe, centres are dangerous, and the machine knows it. PASS AND PLAY Two players, one device. No accounts, no matchmaking, no waiting for a turn notification. Hand the phone over and go. CHOOSE YOUR BOARD From a tight, fast 5×5 up to a sprawling 9×9. Small boards resolve in a minute; large boards turn into slow tactical sieges. BUILT TO FEEL GOOD • Fluid cascade animations that follow the explosion, step by step • Haptic feedback on every burst • Sound effects you can switch off • A clean dark interface, designed for one-handed play • Stuck? Watch a short optional video to reveal the strongest move Free to play. Works entirely offline. No account required.