Moons of Jupiter

The Moons of Jupiter are a location mentioned in Final Doom/Final Doom (PlayStation) (TNT: Evilution)'s backstory.

Background

TNT:Evilution

The Moons of Jupiter

It is the location of one of UAC Bases that researched teleportation technology following the events of Doom II. Technically the location and name of the moon is not specified.

The UAC, under the strict supervision of the United States government, built a base on one of the moons of Jupiter dedicated to continuing the UAC's prior research into teleportation. It was hoped that the increased distance from Earth, relative to Mars, would help protect humanity in the event of another catastrophe. Once gate research resumed, the demons' attentions were drawn to the base and they repeatedly attacked it, but were successfully driven back several times by a detachment of marines from the United States Space Marine Corps.

Ultimately, however, a strange Hellish spaceship appeared in the orbit and monsters poured down onto the moon from its skies, overwhelming the base completely. The Doomguy happened to be on the installation at the time, and was out for a walk when the invasion occurred. When he made it back, everyone else was already dead, and he took it upon himself to once again stop the invading demons.

There are two skyboxes used to represent the UAC Moon Base these include rocky mountainous background with brownish tan skies (the mountains are covered with snow, ash or white sand). There is much lava and volcanic activity on the levels.

The second skybox is night sky with random nebulae/spiral galaxies/gas clouds/solar flares nearby.

Popularly fans tend to think the moon is Io, but this hasn't been confirmed. It is however the closest fit with known knowledge of Jupiter's moons.

TNT (PSX)

Far from earth, the UAC recommenced their experiments on one of the moons of Jupiter. A spaceship, mistaken for a supply vessel on radar, hovered above the base. Hideous demons poured out，blanketing the base with Death. All your comrades were quickly slaughtered or zombified. This time, it’s not about survival. It's about reven

TNT takes place mainly on one of the moons of Jupiter and a few hell levels (though Quarry maybe a absorbed and corrupted portion of the Jupiter moon base leading to Hell proper). These tend to use mainly Doom II dusky/cloudy skybox for the first third of the campaign, the Doom II hell mountains skybox for middle, the TNT and Inferno (episode 3) skybox for latter third. Even some of the levels that were originally tech base levels on the moon are given hell skyboxes in this version.

Doom 64

This may have been the intended location of the space installation discussed in the Doom 64 manual where its location is left unnamed (outside Nintendo's marketing that placed it on Phobos instead). As as this the only official episode taking place in a space installation outside earth also had archviles (first appearing in the 3rd level).

Doom's story has always been simple--you against the forces of hell--and Doom 64 is no exception. The story picks up right after Doom II: It starts right on a space station, with a planetary expedition that's gone wrong and end's in hell.

The story goes down like this: In Doom II the big, bad space Marine who gamers control destroyed everything that even had a hint of being demonic so he thought. The problem was that one of the Archviles was still barely alive. Even though the demon didn't seem to have much of a chance of surviving with the many bullet holes in its gut. somehow the fiend lived. The only enemy left, this particular Archvile, healed and slowly started resurrecting its demon pals. Since the healing process wasn't quite finished, its resurrecting powers mutated the enemies when they came back from hell (hence the new look). Now it's time to get killing once again.

Some of the levels have Lava, similar to locations in TNT:Evilution (Phobos and Deimos do not have lava in real life).

Note: the only space installations (as in outside Earth) mentioned in classic doom games series include Phobos, Deimos, Mars, and on the moons of Jupiter (and additionally Earth's Moon in Doom RPG II). While each of these have been attacked by the forces of hell as seen in the games (or mentioned in the manuals), however of these Archviles only appeared on moon of Jupiter base in TNT:Evilution (though technically they also appeared on Mars in Doom RPG and Doom 3 and on Earth's moon in Doom II RPG, but those may or may not be in separate timelines/universes). The Doom 64 (2020 remaster) also sets the game on Mars (making reference to a previous Mars invasion, and sealing of Mars after possibly as a reference to Doom 3 or the Doom II manual events, or the RPG events or similar).

Lost Episodes of Doom

The unofficial commercial release The Lost Episodes of Doom story takes place on the Jovian moons. Specifically Callisto and Io.