Treasure Island is a graphical adventure game featuring text-based input. The player controls Jim Hawkins through a quest for gold. He must skillfully deal with pirate encounters, solve puzzles, and ultimately outwit Long John Silver. The story is more-or-less faithful to the Robert Louis Stevenson classic.
Gameplay involves typical text-based controls, common in interactive fiction of the early to mid eighties. Compass directions (N,S,E,W) and a limited number of general commands are recognized by the parser. Unlike many text-based adventures of the day, Treasure Island is fully illustrated, with depictions of every location, and many player choices also change the scenery (i.e. boxes that have been open are depicted as such).