Worlds of Ultima
The Worlds of Ultima series (later called Ultima: Worlds of Adventure) was a short lived spin-off of the well-known Ultima series of role-playing video games. They featured the same protagonist as the core Ultima games, the Avatar, transplanting him to strange locations drawn from the archetypes of pulp novels.
Worlds of Ultima: The Savage Empire
Released in 1990 and set immediately after Ultima VI: The False Prophet, The Savage Empire sees the Avatar transported by a friend's failed experiments with an unusual type of moonstone to the jungle valley of Eodon in another world, whose indigenous people were modeled on some of the aboriginal nations of Mesoamerica and tropical Africa. The player needs to understand and master some aspects of their stone-age tribal culture and their "jungle magic" to find a way to bring peace to the valley.
Ultima: Worlds of Adventure 2: Martian Dreams
Released in 1991, Martian Dreams is a pastiche of the fiction of Jules Verne and H.G. Wells. The plotline involves the Avatar travelling through time to the Victorian era and finding himself on a spaceship along with various well-known persons from the late 1800s, including Nellie Bly, Sigmund Freud, and Nikola Tesla; they are on a mission to rescue other important personalities of the time, who have been trapped on Mars due to the sabotage of their ship during a guided tour.
The final Ultima Adventures game, Arthurian Legends was to be set in the times of King Arthur and utilise the Ultima VII game engine. Sheri Graner Ray, one of the two employees working on the project the entire time, stated in an interview for pcGTW, that over time various people were pulled from the game to work on other projects, eventually leaving only herself and Brian Martin working on it. Nine months after it began, it was officially canceled. Martin would go on to become Design Manager for Ultima Online.