In 1971 he invented UNO to resolve an argument with his son about the rules of Crazy Eights.
Crazy Horse | Drive Me Crazy | Crazy | Gun Crazy | Crazy Mohan | Shine On You Crazy Diamond | Ram "Crazy Horse" Vaswani | Eight Crazy Nights | Crazy Town | Crazy Heart | Crazy (Gnarls Barkley song) | The Crazy Gang | Stone Crazy | One Crazy Summer | Going Crazy | Crazy Thunder Road | Crazy in Alabama | Crazy Horse (band) | Crazy English | The Gods Must Be Crazy | Super Crazy | Girl Crazy | Crazy Train | Crazy, Stupid, Love | Crazy Eights | Women's Eights Head of the River Race | We Weren't Crazy | TCBC at the Women's Eights Head of the River Race | Rowing at the 1960 Summer Olympics - Men's eights | Plane Crazy |
Big Two (also known as Deuces and other names, see below; Mandarin: 大老二; pinyin: dà lǎo èr; Cantonese: 鋤大D; jyutping: co4 daai6 di2) is a card game similar to the game of Asshole, Crazy Eights, Bullshit, Winner, and other shedding games.
It was invented in the 1970s in Cambridge, Massachusetts, and is derived from Crazy Eights; in fact, the name Craits is derived from Crazy Eights itself.