Peanut — real-time multiplayer solitaire, free in your browser
Play Nertz NowNertz (sometimes spelled Nerts) is one of the names for Peanut, a real-time multiplayer solitaire card game. 2 to 8 players race at the same time to empty a 10-card pile onto shared foundations, building up by suit from Ace to King.
Peanutroom.com is the free online version. No sign-up, no download. Create a room, share the link, and your friends are in the game in seconds.
Both spellings are correct. "Nertz" with a Z is more common in older American card-game books, while "Nerts" matches the 1920s slang origin ("nerts!" meaning "nonsense!" or "nuts!"). You'll see both in the wild, and the game itself plays identically either way.
Other names for the same game include Racing Demon (the British original), Pounce, and Peanut.