Wikipedia
describes the Marathon Trilogy of games as a series of "science fiction first-person shooter computer games from
Bungie Software...."
which in 1994 "introduced many concepts now common in mainstream video
games," including "dual-wielded weapons, friendly non-player
characters, and most notably an intricate plot."
It's that last bit that intrigues me from a hypertext standpoint. The gameplay was
novel at the time, and all the more remarkable for being released first
on the Macintosh, but it was the plot and narrative which held fans'
attention and led to "The Marathon Story Page" where fans were explicating the plot and finding new details and connections more than seven years after the series concluded.
Bungie Studios eventually released the tools used to create the game as well as the game source code itself. Fan communities continue to create new scenarios, stories, and levels for the engine today.
Beyond the cut: Marathon and game narratives as hypertext