Heretic
"First there was Doom. Now comes Heretic!" (Computer Gaming World #126, Jan. 1995)

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Heretic
"First there was Doom. Now comes Heretic!" (Computer Gaming World #126, Jan. 1995)
Hexen II - Four Horsemen of the Apocalypse
HeXen: Beyond Heretic (Raven Software, id Software / Software Creations, GT Interactive, 1997)
In the 1990s, there were at least 3 separate shared universes for Star Trek games, each with their own unique recurring original characters, ship designs, and species.
MicroProse:
Interplay:
Activision:
Interestingly, Starfleet Command I & II were in the Interplay TOS-era shared universe, while Starfleet Command III was in the Activision TNG-era one.
A couple ship designs from both the Interplay-verse and the Activision-verse have shown up in Star Trek Online, notably the Federation fighters from Starfleet Command and Shattered Universe and the Federation carrier from Star Trek: Invasion.
Also Simon & Schuster produced a bunch of Star Trek games in that same era, but I don't think they had an ongoing storyline or recurring original characters/ships/factions between them like the other publishers did.
" Forget everything your mother has said about running with sharp objects! " Official Sega Saturn Magazine n19 - May, 1997.
"We are live on ModDB now!
The amazing kforkowskii has just joined and will be handling sound effects and other missing audio in the alpha!"
We are working on completing the leaked alpha build of Quake 4's long lost and cancelled expansion, The Awakening. Bringing you a sequel cam
Heretic (1994) Developed by Raven Software