Conway's Game of Life in 3D

Players place Conway Blocks and advance the simulation with a Game Controller item. Right-clicking the controller steps the simulation forward once, and holding the button keeps it advancing. Left-clicking the controller opens a way to edit the game rules. Blocks are registered only when they are placed or broken by hand, or created with a world-edit fill, so the simulation follows the blocks that actually exist in the world.

The mod adds a resetConwayBlocks command that clears the simulation state. Creative mode players find both the Conway Block and the Game Controller under the Redstone tab. The mod runs the well-known zero-player game in a Minecraft world, so a build can evolve on its own once the controller starts it. Some world-edit operations may not register blocks, and in that case the simulation will not pick them up.

Files are published for Fabric only, for 1.21.1. Installation requires the Fabric Loader and Fabric API for 1.21.1, with the mod jar placed in the mods folder. The server and every player need the mod installed. It is released under the MIT License and is open source, with its source code and issue tracker public.