Welcome to Conway's Game of Life. There are 3 rules.
1. Any live cell with two or three live neighbors survives.
2. Any dead cell with three live neighbors becomes a live cell.
3. All other live cells die in the next generation. Similarly, all other dead cells stay dead.
Let's see what kinds of machines you can build... Maybe you'll create a device that generates other smaller flying machines, or a calculator?
When you play this datapack for the first time, a welcome message will tell you all you need to know, including commands, tips, and more information.