Despite the "numerical significance of the WISH, it has nothing to do with *that*.
Recommend three non-RPG games for RPGers. Why do you recommend these three?
Hmm, I know a couple of my choices here have been anticipated elsewhere, but here I go anyway.
Really its a slam-dunk. Its one of those games where you need as many players as possible to make it more fun. Where backstabbing, duplicity, politics and in a sense role-play make the game. It's probably the perfect game for, say, Amber players. I've not done well in the game as I might because, well, I am not as amoral as the game really demands in order to win. But its fun nevertheless
Not so much as for the mechanics of the game itself, but the antiqueness of the game. After all, what other card game has such distinctive props as a cribbage board and pegs. A vocabulary of its own to rival poker and bridge (which would be a good alternate for this slot). There is something genteel about Cribbage.
An obvious choice, one that I am surprised that no one has mentioned yet. Why Chess? Well, its more accessible than other games of its stripe (eg Go), and its well known to just about everyone. And it lends itself to all sorts of styles of play, if you want to get into a roleplaying aspect. To stay within the Amber canon, consider how Corwin might play Chess, versus, say, Julian.