Fan timeline

This article contains timeline of dates from various fan, third-party commercial level packs, and other unofficial mods, in relation to Classic Doom series (based on the classic Snes Doom timeline). Several of these games such as Sigil, Winter's Fury, along with Plutonia Experiment, and TNT: Evilution (originally part of stand alone "Final Doom") are offered as 'add-ons' with Bethesda.com's PC, PS4, and other console releases of Doom 1 and Doom 2.

Timeline

 * 12, 974 BC - An alien race existed in a distant galaxy, a race of beings that had mastered ways of mixing technology with the power of the mind. These were the overseers of the universe, protectors of developing worlds, and masters of incredible technologies. Yet, possessing such technology led to conflicts with savage alien races, including a race of monstrous demonic aggressors. A war ensued between the savage demon race and the alien overseers. The overseers attempted to make peace with the attacking force but their attempts ended in miserable failures. The savages were a race of pure evil, no understanding of diplomacy or peace. In a desperate final attempt at suppressing the aggressors, the overseers closed down their most valuable technology, the inter-dimensional teleporters. Before all the teleporters were powered down, legions of the demonic race made their way through, wreaking havoc on under-developed, formally protected worlds. One of those worlds was Earth, many thousands of years ago. The sight of raging monstrous creatures to villagers and peasants in Earths biblical times bred fear in the minds of all. Eventually, the small unsupported armies of monsters were destroyed, but the advent of these creatures rooted myths into human culture about demons from hell and perdition. After the destruction of the initial demon force, myths and legends were all that remained regarding the existence of the creatures.
 * 2018 - The military, UAC's biggest supplier, has used the remote facilities on Phobos and Deimos to conduct various secret projects, including research on inter-dimensional space travel.
 * 2019 - The Marine assaults a superior officer, and is transferred to Mars, home of the Union Aerospace Corporation.
 * 2021
 * July 1 - DOOMNL 01-D19305-1C is published.
 * October 15 - Lone scientist is sent on a scientific journey to the outer Solar System
 * 2022
 * March 15 - Mars receives a message from Phobos base stating that the base is under attack and requesting backup.
 * A few hours later, the marines land and try to stop the invasion. The Marine is ordered to stay behind and protect the perimeter. The marine forces are wiped out or turned into monsters. Planetary authorities send the final Marine the new DOOMNL 01-D19505-1D replacing earlier manual (now including briefing for the Marine, and images from the invasion captured by remote video cameras. The video data was computer analyzed by the UAC and the results are provided "here and only here") . The Marine leaves the escape pod vowing to take down as much of the invasion force as possible before death.
 * Knee Deep In the Dead begins as the Marine arrives in the Hangar Atrium.
 * Knee Deep in the Dead ends as the Doom marine is ambushed by the forces of hell upon arriving on Deimos, and presumably dies.
 * Shores of Hell begins as the Doom Marine finds himself alive somehow, and pushes against the forces of Hell.
 * Shores of Hell ends as the Doom Marine rappels down the surface of Deimos, discovering that it is now orbiting above Hell itself.
 * The Lost Episodes of Doom - Meanwhile on Callisto, Io, and Jupiter.... You're the lone occupant aboard a utilitarian deep space probe returning to Earth. Your six-month reconnaissance mission of the outer Solar System is over and you're finally headed back home.
 * Inferno begins as the Doom Marine arrives on the surface of Hell.
 * Inferno ends with the Doom Marine killing the Spider Mastermind, the general of the Phobos and Deimos invasions, and 'rewarded' with a gateway to Earth discovering Earth has been invaded and his pet Rabbit is killed.
 * Thy Flesh Consumed begins (an interquel of sorts inserted after Shores of Hell and before or during Doom II). The Doom Marine continues to fight in revenge for his dead pet Daisy stopping the Spider Mastermind's invasion force 'before' it is sent to earth. But he is unable to prevent Hell on Earth.
 * Doom: The Lost Episode
 * SIGIL begins (the interquel continues) After killing the Spiderdemon the Marine's next stop is Earth — he must save it from hellspawn that has causing unimaginable carnage. But Baphomet glitched the final teleporter with his hidden sigil whose eldritch power brings the marine to even darker shores of Hell. He fights through this stygian pocket of evil to confront the ultimate harbingers of Satan, then finally return to become Earth's savior.
 * Meanwhile, a Marine stops a demonic invasion on the UAC Mars Base on Mars over the course of a few days. He is given leave to return to Earth. He was the only survivor on Mars. He returns to earth in a drop pod only to discover it has been invaded by the Demons from the Outside.
 * Doom II begins
 * Master Levels for Doom II/Maximum Doom/PSX Master Levels campaign
 * No Rest for the Living begins
 * The Doom Marine continues his battles on Earth after Hell's forces were seemingly vanquished, and is forced to travel to a pocket universe to stop another demonic threat.
 * The Union Aerospace Corporation is entirely reformed, as the original stockholders, trustees and management were killed in the invasion of Earth, and begin managing two projects; one in an unknown jungle, and the other on one of the moons of Jupiter.
 * TNT Evilution begins with the Doom Marine, the last surviving marine Jupiter moon base, once again fighting against the forces of Hell.
 * TNT Evilution ends with the Doom Marine destroying the Demon-spitter
 * The Quantum Accelerators succeed in their maiden test, however fail in their second activation leaving one Gate left open for the forces of Hell to
 * 2023
 * Yearly supply ship reaches Jupiter's moon. Demons use it to invade the UAC base there.
 * The Plutonia Experiment begins as the Doom Marine fights against the forces of Hell again after arriving via pickup truck.
 * The Plutonia Experiment ends with the Doom Marine destroying the Gatekeeper, swallowing up the final demons and the accelerator.
 * The fatigued Doom Marine is decommissioned, and the military DOOM Episodes are classified. The UAC's bases are sealed, and quarantined by radioactive bombardment.
 * Mother Demon survived in radiation of bombarded planetary space installation. Shielded in the radiation it resurrected the demons mutating them into stronger and more vicious forms.
 * 2026
 * Perdition's Gate
 * Doom 64 begins (a few years after Doom II)
 * The Doom Marine is re-commissioned to stop and the latest invasion, he stops the Motherdemon's forces which had been building in the former battlegrounds he failed to clear.
 * Doom 64 ends. The Doom Marine decides to stay in Hell to prevent the rise of another demon lord after destroying the Motherdemon.
 * 2033 - Winter's Fury
 * 2174 - Action Doom
 * The Union Aerospace Corporation is in over its head. On a remote island in the Gulf of Mexico, the United States Goverment funded the construction of the top secret UAC Site 4 Labs. They were to be in charge of the work the government was unwilling to show the public. Originally, the base was constructed to investigate extra terrestrial lifeforms buried deep beneath the surface of the earth. Recently however, scientists and army officials together have begun teleportation experiments... into other dimentions. Using this newfound portal technology, the United States Government has created a gateway into Hell itself. Now, never content to just sit idle, scientists at UAC Site 4 have begun genetically altering demons brought back from hell, with the DNA from the Aliens found at the crash site. It has been a week since any contact has been made with Site 4, and the government has only one option left, the men and women of the most elite government task force known as I.M.P.S.E. It's up to you to discover what happened to the UAC Installation.
 * 2184 - Action Doom 2: Urban Brawl
 * 2212 - Two hundred years have passed since a lone marine stood against the forces of Hell. Bone weary from the conflict, and thinking they were finally safe, mankind shunned the ways of war and devoted themselves to turning Earth into a paradise. Near Jupiter, a worm hole opened. A vast alien armada quickly established on Io, Jupiter's volcanic moon. Without warning, the alien fleet descended upon an unsuspecting Earth. Many rushed to greet the alien visitors, only be dismembered by the killing machines disgorged by the hellish alien ships. It was soon obvious that the aliens were bent upon savage colonization. Some even tried to defend the planet, but it was hopeless. Billions died. They were the lucky ones. Those that remain bowed down before their new metal masters and meekly accepted the living Hell that awaited them in the Slave Pits. The physically fit were pressed into labor under inhuman conditions. Those who weren't or who could not perform to the satisfaction of their masters were led away never to be seen or heard from again. No one really knew what happened to them, but there were rumors too horrible to believe.
 * 2222 - Hell to Pay: But it wasn't the metal demons who were feared the most, rather the sadistic and twisted among you who were led away only to come back transformed into trustee guards. The way they looked at you with a hunger in their eyes was enough to send shivers down your spine. But unlike the other slaves who have given in to fear, you have let the hate burning in your heart give you strength while you waited for your opportunity to strike back. But the worst has happened, one of your fellow slaves whom you told of your plans was turned into a trustee. You have been arrested and thrown into a holding cell. The opportunity you've been waiting for hasn't arrived. The other slaves had been looking towards you to lead the revolt. As the trustees lead you away, you saw in their eyes that they had lost of hope. As the trustee opens the cell, you shudder as you remember the rumors of a "Final Solution". Filled with rage, you slay the trustee with a savage blow. You grab his pistol and emerge from the cell screaming, "There's gonna be HELL TO PAY!"