This game may not be for everyone. It's a 2-dimensional cellular automaton. You'll see a grid with some cells, in every level you can add some cells and need to fulfill a goal. Cells in the grid follow a few simple mathematical rules that determine whether they will live, die or multiply in the next generation. Some hints are given too, right under the level counter. It's recommended to follow this game's tutorial though. The rules of the game:

1. Any live cell with fewer than two live neighbours dies, as if by needs caused by underpopulation.
2. Any live cell with more than three live neighbours dies, as if by overcrowding.
3. Any live cell with two or three live neighbours lives, unchanged, to the next generation.
4. Any tile with exactly three live neighbours cells will be populated with a living cell.

Sounds very simple, right? John Conway's original version of this Game of Life was developed in 1970, now you can play it online!