I'm glad you asked! I use Google Chrome's profile manager feature and just make a different profile for every account, so when I wanna switch to say, primeElephant I just click on the primeElephant profile in Chrome and boom!
the 70 games was across all their alts together lemme find the stats From round 458: "xjuicy - 7 games with mindful, 7 with swan, 1 with mean = 15 games cupidstunt - 15 games with mindful, 10 with swan, 7 with mean = 32 games juke - 5 games with mindful, 7 with swan, 5 with mean = 17 games" which is at least 64 games in total