Stars Replay (opens in new tab)
drewhoover.com/stars-replay
A Chrome extension prototype that records Inkwell Games' Stars and Mosaic solves as DOM diffs instead of the screen-recorded time lapses people share in the Facebook group: every X, star and Undo with a timestamp, at about 40 bytes per move. The whole recording fits in the share link's URL fragment, so anyone can open it in a static viewer and scrub, step through the moves or play it back at up to 8x.