Card School
Traditional British card games, played properly.
Crash (13-Card Brag), 7-Card Brag and Pass & Play, with the rules done the way they're actually played: a run beats a flush, a prial of threes is the top hand in Crash, and fewer than four hands is legal if you can't make four. Scored on a two-track pegboard. No account, no sign-up, works offline.