Game of Life
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Conway's Game of Life runs the classic B3/S23 rule: a dead cell with exactly 3 live neighbours is born, a live cell with 2 or 3 neighbours survives, and every other cell dies. All cells update at once each generation.
About Game of Life
Game of Life is a calm, watchable cellular automaton · the classic one devised by mathematician John Conway in 1970. It is the first title in the PlayMemorize Idle Games collection: systems that are satisfying to watch, simple to nudge, and faithful to their underlying rules. There is no score and nothing to lose · you set a starting pattern and observe how it unfolds.
The rule (B3/S23). Every cell on the grid is either alive or dead. On each generation, all cells update at once from their eight neighbours: a dead cell with exactly three live neighbours is born, a live cell with two or three live neighbours survives, and every other cell dies or stays dead. Those four lines produce astonishing behaviour · still lifes, oscillators, and gliders that crawl across the board.
Starter patterns. Pick from a curated set: the still-life Block that never changes; the Blinker, Toad, and Beacon oscillators that pulse forever; the Glider that walks diagonally across the grid; plus an empty board and a random soup to experiment with. Tap or click any cell to bring it to life or clear it, then press Play to watch, or Step to advance one generation at a time.
Controls. Play or pause, step a single generation, reset to the current pattern, and set the speed up to a bounded maximum. A running generation count and live-cell population are always on screen. The full keyboard works too: Space plays or pauses and the Right arrow steps.
Calm by design. The simulation pauses itself when you switch tabs, and it never auto-animates when your device asks for reduced motion · you simply step generations by hand instead. It runs entirely in your browser and works offline as part of the PlayMemorize app. Part of the PlayMemorize family.
FAQ
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What rule does Game of Life run?
The standard Conway rule, written B3/S23. A dead cell with exactly three live neighbours is born; a live cell with two or three live neighbours survives; every other cell dies or stays dead. All cells update simultaneously each generation, on a bounded grid where cells off the edge count as dead. -
What are the starter patterns?
A curated set of the classics: the Block (a still life that never changes), the Blinker, Toad, and Beacon (oscillators that repeat forever), and the Glider (a spaceship that travels diagonally). There is also an empty board and a random soup so you can draw or experiment with your own cells. -
How do I change the grid?
Tap or click any cell to toggle it alive or dead. Then press Play to run the simulation, Step to advance one generation, Reset to restore the current pattern, and drag the speed control to change how fast generations play, up to a bounded maximum. -
Does it keep running when I leave the tab?
No. The simulation pauses when the tab is hidden or backgrounded, so it never burns battery in the background. When you return, it stays exactly where you paused it · the generation count and population are preserved. -
Does it respect reduced motion?
Yes. If your device requests reduced motion, the board does not auto-animate. Everything still works · you step through generations by hand with the Step button or the Right arrow key, and the current state is always visible without any animation.