Man, Pagat.com is one of the true gems of the internet. I’ve been using it since I was a kid to learn games (and, more importantly, to win rules disputes while playing them). John McLeod deserves an award for compiling and maintaining such a compendious and well-organized project.
It's my go-to example of a really great traditional website.
I have a group of friends that discovered Doppelkopf through this site about twenty years ago (after trying out a number of related games) , and we still meet to play it.
