Conway's Game of Life Screensaver — Free Fullscreen Cellular Automaton in Your Browser | No Download | jasperbernaers.com

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Conway's Game of Life Screensaver_

The classic cellular automaton — fullscreen, in your browser. 6 patterns · click to draw · glow & trails · no download.

✏ drag to draw · press F to fullscreen

Screensaver

⛶ Enter Fullscreen

⏸ Pause

gen 0<br>pop 0

Preset Patterns

🟢 Classic<br>Random soup, B3/S23

🛸 Gliders<br>A field of travelling gliders

💠 Pulsars<br>Period-3 oscillators

🔫 Glider Gun<br>Gosper gun, endless gliders

🌀 Maze<br>B3/S12345 corridors

🔴 HighLife<br>B36/S23 replicators

Color

Custom

#00ff88

Simulation

Speed

Cell Size

Density

Trail

Glow

Cell Style

Square<br>Rounded<br>Circle<br>ASCII ▓

Actions

🎲 Randomize

⏭ Step Once

🗑 Clear Grid

↺ Reset Defaults

What is Conway's Game of Life?

Conway's Game of Life is a cellular automaton devised in 1970 by mathematician John Horton Conway . It is a "zero-player game" — its evolution is determined entirely by its initial state. Cells on a grid are either alive or dead, and at each generation simple rules based on the eight neighbours decide who lives, dies, or is born. From these trivial rules, gliders, oscillators, guns and other lifelike structures spontaneously emerge. This screensaver runs the simulation live on an HTML5 Canvas with six starting patterns and full visual customization.

The rules (B3/S23)

A dead cell with exactly 3 living neighbours becomes alive (birth). A living cell with 2 or 3 living neighbours survives. Every other living cell dies — under-population below 2, or overcrowding above 3. Change to HighLife (B36/S23) or the Maze rule (B3/S12345) using the presets for completely different behaviour.

Preset patterns

🟢 Classic A random soup under the standard B3/S23 rule — the definitive Life experience.

🛸 Gliders A field of gliders, the smallest spaceship, drifting diagonally across the grid.

💠 Pulsars Period-3 oscillators that pulse forever — one of the most common large oscillators.

🔫 Glider Gun The Gosper glider gun, the first pattern proven to grow without bound.

🌀 Maze The B3/S12345 rule freezes a random soup into maze-like corridors.

🔴 HighLife The B36/S23 rule, famous for its self-replicating "replicator" pattern.

How to use as a screensaver

Press F or click Enter Fullscreen in the sidebar to fill your entire screen. Move your mouse to reveal the exit button, or press Escape to exit. Click and drag directly on the grid to draw your own living cells and watch them evolve. Works on any device — PC, Mac, tablet, phone.

Keyboard shortcuts

FToggle fullscreen<br>SpacePause / resume<br>NStep one generation<br>GRandomize grid<br>CClear grid<br>RReset to defaults<br>1–6Switch preset pattern<br>EscExit fullscreen

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▸ Frequently Asked Questions

FAQ — Conway's Game of Life

What is Conway's Game of Life?<br>Conway's Game of Life is a cellular automaton devised in 1970 by the British mathematician John Horton Conway . It is a zero-player game played on a grid of cells that are either alive or dead. Each generation, every cell's next state is decided by simple rules based on how many of its eight neighbours are alive. From these trivial rules, astonishingly complex and lifelike patterns emerge. This tool runs it in your browser using HTML5 Canvas — no plugins or downloads needed.

What are the rules of the Game of Life?<br>The classic rules are written B3/S23 : a dead cell with exactly 3 living neighbours becomes alive (birth), and a living cell with 2 or 3 living neighbours survives. Every other living cell dies — from under-population (fewer than 2 neighbours) or overcrowding (more than 3). This screensaver also includes HighLife (B36/S23) and a Maze rule (B3/S12345) as presets.

How do I run this fullscreen as a screensaver?<br>Press F or click Enter Fullscreen in the sidebar. The simulation will fill your entire screen. Move your mouse to reveal the exit button, or press Escape to return to normal view. Because clicking on the grid draws cells, use the button or the F key to go fullscreen rather than clicking the canvas.

Can I draw my own patterns?<br>Yes. Click and drag anywhere on the grid to bring cells to life, then watch them evolve under the rules. Use Clear Grid to start from an empty board and design your own seeds, or Randomize to fill the grid with a fresh random soup at your chosen density. Step Once advances a single generation so you can study the rules frame by frame.

What preset patterns are included?<br>Six presets: Classic...