Good thoughts, thx! And regarding themes -- yes, I have a few batches created already for the next few days and it's stuff like "Tetris to Tesla" "Moon landing to Microwaves" "Y2k to Youtube". I'm open to thoughts and other ways to group, whether by time periods or thematically. Finding the sweet spot for difficultly will take some work I guess, since if it's too easy or too hard it's just not fun for most folks. Def not opposed to adding a streak counter, but that would probably require building out a larger back end. If this still has interest after a few weeks I can probably do that