8 Out of 10 Cats Does Countdown (or simply Cats Does Countdown) is a crossover between the panel game 8 Out of 10 Cats and the game show Countdown. The show follows the format of Countdown, but with hosts and contestants from 8 Out of 10 Cats, and an emphasis on humour.The first episode aired as part of Channel 4's "mash-up night" on 2 January 2012; the first full series was aired in July 2013 and multiple series have since been commissioned.