Click green flag. I recommend using Turbo mode. Just watch as the iterator works. Not a game. Enable BW mode to only include black and white.
Activate "Run without screen refresh" on the "Draw a 2x2 grid" block or use Turbowarp for more speed. The formula for calculating the final length of the iterations is n_colors ^ n_squares. This was made as a side project, like a recreation of the Canvas of Babel but in a much smaller environment.
