Game of life also know as Life, is a cellular automation. It's basically an infinite grid of cells and each cell can be either dead or alive. The 3 simple rules this particular automation are:

• Every alive cell with less than 2 neighbors, dies in the next generation
• Every alive cell with more than 3 neighbors also dies in the next generation
• If a dead cell has exactly 3 neighbors, it will become a live one

The rest of the cells stay as they were the previous generation.