Softporn Adventure is a comedic, adult-oriented text adventure game produced for the Apple II in 1981. The game was created by Charles Benton and released by On-Line Systems, later renamed Sierra On-Line. Years later, Softporn Adventure inspired the Leisure Suit Larry series of adult-oriented videogames, and the first entry in that series, 1987's Leisure Suit Larry in the Land of the Lounge Lizards, was a nearly direct graphical adaptation of Softporn Adventure.

Chuck Benton, a Massachusetts native, had a difficult time finding a publisher for Softporn until Ken Williams discovered it at a trade show and decided to give the game a chance.