Yakyuuken

One of the very first erotic video games ever released. Gameplay is comprised of a strip variation of rock-paper-scissors, based on a concept popularized by "Konto 55-gou no urabangumi wo buttobase!", a variety show which ran from April 27, 1969 to March 29, 1970. Players set how many articles of clothing they would like their opponent Megumi to wear, and after each victory she removes one piece until she is nude.