One Rule, Zero Hands: 9 Satisfying Simulations That Solve Themselves

Computed | Satisfying Simulations

Computed | Satisfying Simulations

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Watch twelve tubes sort themselves, an agate seal its own bands, eight colors fight for one board, a nine-color sudoku solve itself by stepping back, a rainbow wave bend around mountains, a labyrinth of curves draw itself, two block towers burst 150 lines, a sliding puzzle find its gradient and a glass harp fill itself to a tune, all appearing from nothing but a rule and a few thousand moves. No narration, no music track, only what the simulation makes.

Photosensitivity note: this video contains moving bright colors and brief, small flashes of light. There are no full-screen strobes.

Every simulation here was written from scratch. A chapter is over only when its own rule has nothing left to change, not when a timer says so.

The water-sort, color-sudoku and sliding-puzzle chapters are my own take on the puzzle videos that solve themselves: every pour, placement and slide is a real move of the solver, replayed as it found it. The last chapter's glass harp plays a public-domain nursery air (the 18th-century French tune behind Twinkle, Twinkle); each glass holds exactly as many drops as the tune gives it.

Chapters
0:00 Every pour sorts a layer — until each tube is ONE color
0:43 Every layer settles on the last — until the AGATE is sealed
1:27 Every border pushes a little — until ONE color owns the board
2:09 Every clash steps back one cell — until the GRID is whole
2:52 Every node is settled by its cheapest route — until the WAVE paints the map
3:35 Every tile turns on its own — until a LABYRINTH of curves appears
4:19 Every row filled is a row cleared — until 150 LINES burst
5:03 Every slide closes one gap — until the GRADIENT is whole
5:46 Every note drops water in a glass — until the HARP is full

Pick your favorite ending and tell me the timestamp.

New simulations every day.

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