Softporn Adventure was 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.
In the game, the player (playing a down-on-his-luck party animal) is required to obtain certain items that will allow him to win the affections of a series of beautiful (and sometimes not-so-beautiful) women.
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.
Source: Wikipedia, "Softporn Adventure", available under the CC-BY-SA License.
Re-implemened by: Leisure Suit Larry in the Land of the Lounge Lizards