The Doom Classic Compilation is a steam/ID/Bethesda release including Doom I + Doom II, Doom 3 (both original and BFG Edition), and Doom 64 (2020 remaster) in that order.
Noteably the new backstory for Doom 64 remaster appears to be referring the story and synopsis for Doom 3 in reference to the UAC Mars Research Facilities.
Background[]
ABOUT THIS BUNDLE Developed by id Software starting in 1993, experience the legendary and timeless series of classic games that defined the first-person shooter genre and delivered cutting-edge technology and graphics. Times change...DOOM is eternal.
This bundle includes:
DOOM + DOOM II
Developed by id Software, and originally released in 1993, DOOM pioneered and popularized the first-person shooter, setting a standard for all FPS games. The critically acclaimed sequel, DOOM II, followed in 1994. Now the definitive, newly enhanced versions of DOOM + DOOM II are available as a combined product for PC and 8th + 9th generation consoles.
Owners Receive:
- DOOM
- DOOM II
- TNT: Evilution
- The Plutonia Experiment
- Master Levels for DOOM II
- No Rest for the Living
- Sigil
- Legacy of Rust (a new episode created in collaboration by id Software, Nightdive Studios and MachineGames)
- A new Deathmatch map pack featuring 25 maps
- The original DOS versions of DOOM (1993) and DOOM II
DOOM 3
A massive demonic invasion has overwhelmed the Union Aerospace Corporation's (UAC) Mars Research Facility, leaving only chaos and horror in its wake. As one of only a few survivors, you must fight your way to hell and back against a horde of demons in this critically acclaimed horror/action first-person shooter and reimagining of the original DOOM.
Owners Receive:
- The original DOOM 3 and Resurrection of Evil Expansion
- The remastered DOOM 3: BFG Edition
DOOM 64
Originally released on Nintendo 64 in 1997, DOOM 64 is an action first-person shooter and a direct sequel to the events of DOOM II. In celebration of DOOM’s 25th anniversary, this enhanced version of DOOM 64 was released on PC and consoles.
Years have passed since you stopped Hell’s invasion of Earth. Quarantined for humanity’s safety, the UAC research facilities on Mars were abandoned and forgotten...until now. A signal from a degraded satellite suggests a single entity remains, and it has the power to resurrect the demons. As the only surviving marine who fought Hell’s forces, you are sent on a lone crusade to hunt down the Mother of Demons and stop a renewed demonic invasion.
Owners Receive:
- The enhanced version of DOOM 64
Behind the scenes[]
Hugo Martin has gone on the record to say every numbered game is indeed canon (including Doom 3). He later clarified that everything including Doom Reboot and Doom 3 links back through Doom 64.