fan tan

(noun) a Chinese gambling game; a random number of counters are placed under a bowl and you gamble on how many will be left (0, 1, 2, or 3 modulo 4). Synonyms: fantan, fan tan.

(noun) a card game in which you play your sevens and other cards in sequence in the same suit as the sevens; you win if you are the first to use all your cards. Synonyms: fantan, sevens, parliament.