Use the arrow keys to cycle through the blocks. press space to advance one step. You can hold space down though :)
Sadly, it is to slow to put this on a loop. It takes up the whole screen, and is pretty big. play around with it :) for more information on Conway's game of life, go here: https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life for a bigger playable version, go here: http://www.bitstorm.org/gameoflife/ enjoy!