An addventure, also known as a collaborative gamebook, is a type of online interactive fiction that combines aspects of round-robin stories and Choose Your Own Adventure-style tales.
The emergence of computer networks and electronic communication made the writing of collaborative fiction faster and more convenient than previous forms of correspondence.
Round-robin stories were being written on bulletin board systems, mailing lists and USENET news groups, and many variations of the format were tried.
The portmanteau word "addventure" was coined by Allen "Prisoner" Firstenberg when he created an add-on story for the Nyack High School BBS in 1987–88 and called it "Add-venture".
This is psychologically extremely rewarding for people of all walks of life and explains the continuing and in fact growing niche popularity of the addventure genre.