Peanut — real-time multiplayer solitaire, free in your browser
Play Racing Demon NowRacing Demon is the British name for Peanut, a real-time multiplayer solitaire card game known in America as Nerts. It descends from the Victorian-era single-player game Demon Patience (called Canfield in the US): same 13-card reserve pile, but now every player races to clear theirs at the same time onto shared foundations.
Peanutroom.com is the free online version that plays by the classic Racing Demon rules: 2 to 8 players, simultaneous play, first to empty their pile ends the round.
Racing Demon appears in British card game compilations from the early 1900s, but oral tradition places it in the late Victorian era (1880s - 1900). British card-game author Mary Whitmore Jones documented competitive patience games in the 1890s. When the game crossed to America in the early 1900s, it picked up the name Nerts (from 1920s slang for "nuts!").