Tap one gem. Watch the whole board fall.
Chainfall is a daily chain reaction puzzle. Every gem holds a number of lives. Tap it and it loses one. Take its last life and it detonates, firing in all four directions, and each shot travels until it reaches the next gem still standing and takes a life from that one. Sometimes nothing happens. Sometimes one tap takes half the board with it. Working out which is the game.
ONE BOARD A DAY, THE SAME ONE FOR EVERYONE
A new chain lands every day, identical for every player on earth, generated offline and baked into the app. Three rungs off the same seed: Easy, Standard and Hard. Play one rung or all three.
PAR IS COMPUTED, NOT GUESSED
Par is the fewest taps that can clear the board. A solver reads the board, plays it out to the end and returns the true minimum. The same solver proves the board can be cleared at all, then hands you a move to spare on top of par. A board that fails either check does not ship. Gold for matching par, silver at par plus one, bronze for clearing it.
A MISSED DAY SLOWS YOU DOWN. IT NEVER ERASES YOU.
Chain Days is a lifetime count of the days you have played, and nothing in this game can decrease it. Not a miss, not a purchase, not an ad, not a reinstall. The streak sits on top as a bonus, and a Chain Guard absorbs one missed day. Guards are earned by playing, at every ten-day streak, and a Streak Restore is there if you would rather not wait for the next one.
EVERY PAST DAY IS STILL THERE, AND STILL FREE
Miss a week and the week is waiting for you. Every previous daily is playable, forever, at no cost and behind no gate.
SHARE THE SHAPE OF YOUR CHAIN
Finish a day and Chainfall draws your cascade as a grid of blocks, shaded by which tap set each gem off. It reads in any language, and it shows something a word grid cannot: one tap, fourteen detonations.
THE ARCHIVE, SORTED BY REAL DIFFICULTY
Behind the daily sits the Archive: 500 boards, every one solver-verified, ordered by a measured difficulty index and cut into chapters of twenty with a gold target on each. Any board you have finished stays open for a better medal.
UNDO IS FREE AND IT IS UNLIMITED
Step back as many times as you like. No cost, no ad, no currency, no daily allowance. Undo turns a chain reaction from something you gamble on into something you test.
STUCK IS NOT A DEAD END
Three hints a day, free, computed from the board in front of you rather than read out of a stored answer. Need more than three, or want the whole board played out for you? The solver will clear it in the fewest taps that work, and Sparks pay for both.
WHAT IS FREE STAYS FREE
Unlimited undo. Restart any board, any time, at no cost. Three hints every day, and every past daily forever. Nothing you need in order to clear a board is behind a price. No fullscreen ad ever interrupts a board, and the daily home screen carries no ad at all.
PLAYS OFFLINE, AND MEANS IT
Airplane mode, underground, no signal, no data plan. Today's board is already on your device. Chainfall never calls a server to run a board.
ONE CURRENCY, AND NOTHING THAT REVERSES A LOSS
Sparks are the only currency, and they buy three things: extra hints, solver walkthroughs, and a repair for a broken streak. Watch a video to earn them or buy them outright. There is no subscription. A separate one-time unlock removes the banner from the Archive and cannot be revoked.
There is no revive, no skip and no extra moves. Undo is unlimited and restart is one tap, so anything sold to undo a mistake would be competing with a button you already have.
Tap one gem. See how far it goes.
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