I love it! Please create more puzzles/levels. And please please try to improve the UI: - I find "click to toggle" somewhat annoying. Maybe try "click to set"

I love it! Please create more puzzles/levels. And please please try to improve the UI: - I find "click to toggle" somewhat annoying. Maybe try "click to set", "ctrl-click to unset"? - A light-grey grid background would make it easier to align shapes. - Similarly, showing the changing coordinates on mousemove would also help with alignment. - Highlighting the current grid square under the cursor allows for more confident placement of cells. - It'd be nice if the canvas was centred on the page. - Adjustable speed of the simulation. Just a "slow/medium/fast/ultra" selector would be fine IMO. BTW, do you know about the Hashlife optimization/memoization technique? You probably won't need it to speed up this 64x64 simulation, but in case you hadn't heard about it, check it out because it's a fairly amazing trick (IMHO) and also results in ridiculous speed-ups. See https://en.wikipedia.org/wiki/Hashlife https://en.wikipedia.org/wiki/Hashlife and (from external links) I remember this explanation to be fairly clear: http://www.ddj.com/dept/ai/184406478 http://www.ddj.com/dept/ai/184406478