Sequence memory

How the game builds the pattern

The board is a 3 by 3 grid of nine tiles. Level 1 flashes a single tile; every level after that replays the exact same sequence and appends one new random step to the end, the same rule as the classic Simon game. Playback runs at a fixed tempo, one flash every 560 milliseconds with each tile lit for 380, then a short pause hands the board to you. Repeat the whole sequence in order by tapping. One wrong tile ends the run immediately, and your score is the last level you fully cleared. Your best is kept in your browser.

One thing the game does not do: it does not avoid repeats. Each new step is drawn at random from all nine tiles, so the same tile can appear twice in a row. At playback speed a doubled tile looks like a single slightly odd flash, and it is the single most common way decent runs die. If a flash seems to hang or stutter, assume it was two.

Strategy from people who have ground this out

Stop memorizing tiles as numbered positions. The sequence is a path on a grid, so store it as a drawing: down the left side, cut across the middle, corner, corner. Verbal labels cap out fast; a traced shape holds far longer because you are using spatial memory for a spatial task. Chunk the path into two or three sweeps and rehearse the sweeps, not the steps.

The practical tip that moves scores: since each level only adds one step to a sequence you have already executed, the first N-1 taps of every level are pure recall of something you just did. Do not re-memorize the whole playback each time. Let the familiar part wash over you at low attention and spend your focus entirely on the final flash. Your job each level is really to memorize one new step and splice it onto the end. Players who watch the whole playback with equal intensity burn out around level 8; players who watch only the tail routinely go several levels deeper. And tap at your own pace during recall, the game does not time your input, so slowing down at the newest steps costs nothing.

Where scores usually land

Most people fail somewhere between levels 8 and 12. Spatial sequences tend to run a little longer than digit strings for the same person, because a path gives you structure that a random number lacks. Runs are also streaky by nature: one careless tap on level 3 scores the same as a genuine failure at your limit, so treat your best over a handful of attempts as the real number, not any single run.

Design notes

The playback tempo never accelerates; difficulty comes only from length. The board accepts input on pointer down, so taps register the moment you make contact, and correct taps give a short confirmation flash without slowing you down. There are no lives, no second chances at a level, and no leaderboard. The sequence is generated fresh each run, so no two games share a pattern and there is nothing to look up. If a run ends on a tile you were sure of, remember the doubled-tile rule above before blaming your memory.