Chain Reaction — One-Click Particle Puzzle

One click starts everything

Particles keep moving while you watch. Click or tap once to place an expanding pulse. Every particle it touches creates another pulse, so timing and position determine how far the reaction spreads.

How to play

• Wait for particles to gather, then click or tap once anywhere in the field.
• Reach the target before the last pulse disappears.
• Earn score multipliers by exceeding the target, clearing every particle, and reaching the target quickly.
• Use Restart for an immediate new attempt, or revisit any unlocked level from the level selector.
• Your unlocked levels, best chains, best scores, and total score are saved in this browser.

The first 20 levels build toward a field of 100 particles. After that, levels continue without a limit: the particle count stays fixed while pulses gradually become shorter and tighter. There are no extra clicks or hidden abilities—observe, choose your moment, and commit.

News & Release Notes

October 1, 2026 — Endless levels and score multipliers

• Fullscreen mode now expands and redraws the complete playfield to match the available screen, then returns cleanly to the embedded size.
• Levels now continue beyond 20 without resetting the level number. Endless levels keep 100 particles while pulse reach and lifetime decrease slowly.
• Every attempt awards points for the chain, then applies visible multipliers for particles destroyed beyond the target, a full clear, and the time needed to reach the target.
• Each level keeps its best score. Your total only grows when you improve a level record, so repeated easy attempts cannot inflate it indefinitely.
• The new Global score divides your accumulated best-score total by the number of levels with a recorded score, making progress comparable as the endless run grows.

October 1, 2026 — Chain Reaction launches

• Particles now move twice as fast, while pulses last four times longer and reach three times farther for bigger, more dramatic cascades.
• Pulses now bloom with layered energy, luminous shock rings, and brighter cores as each new reaction ignites.
• Pulse reach and lifetime now fall progressively faster as particle populations grow, with subtle natural variation in every burst to make the crowded final levels demand better timing and positioning.
• Play 20 progressively challenging one-click particle puzzles.
• Watch glowing pulses trigger each other and follow the live chain counter as the reaction grows.
• Retry instantly, revisit unlocked levels, and keep your best chains and campaign progress in this browser.
• Play with mouse, touch, or a trackpad on desktop and mobile screens.