Interactive editor
Game of Life Pattern Observatory
Load a classic seed, inspect how it evolves, and branch new experiments from any generation in the timeline.
Load from the observatory to begin quickly, or click to toggle a cell and drag to paint. Hold Option to erase.
Drift is best for long-lived seeds. Steady is the default. Pulse makes spaceships and guns easier to read.
Observatory Timeline
Hover the chart or scrub the history to inspect earlier generations. The board view updates to the selected snapshot.
Load a pattern or add a few live cells to start plotting how the population changes.
Generation 0 has 0 active cells.
The board is empty, so the observatory is waiting for a seed.
Pattern Observatory
Browse classic Conway patterns below. Each card carries its own preview, context, and controls so you can scan left to right without opening a second module.
No patterns match this filter yet.