READ THIS FIRST! A live square will die unless it has exactly 2 or 3 live neighbors. An dead square will become alive if it has exactly 3 live neighbors. Hover your mouse over the top left of the screen for the settings (in play mode). Hover your mouse over the bottom right of the screen for the button to toggle between edit and simulate mode. In edit mode, click on the grid to add/delete squares. Presets delete the whole grid (it cannot be brought back) and replace it with a preset grid. 1 = nothing 2 = random 3 = flying machine 4 = flying machine generator there are glitches around the edges but I can't be bothered to fix them.