Also known as: 脱衣勝負, 脱衣ゲーム, 野球拳
A party game where a group of people take turns playing and the loser at the end of each round has to strip as a penalty. Usually the game doesn't end until at least one player has lost enough clothing to be Completely Nude.
It can also be the result of Gambling where a person loses all their money and, in a desperate bid to win it back, starts literally betting the clothes off their back.
Specific types of strip games include Strip Poker, Strip Mahjong and even Rock Paper Scissors.
Not to be confused with Twitter Strip Game, a game played with the audience via votes.