Millennia Invasion

Millennia Invasion is a single-level ZDoom compatible PWAD created by Doomguy 2000 for Doom II, released in September 2012. The story starts off with an invasion planned back in 2988 BC and happens in the year 2012 AD. The main objective is to supposedly find the self destruction switch or find a way to somehow shut down the spaceship.

The enemies include: five different enemies from Doomguy's Warzone (Tourette's Demon, Gay Rapist, Ceeb, Warrior of Hell and Gallant Don), Terry Crews from Joey's Challenge Pack, Mini John Heads from UAC Military Nightmare, fake actors with the monster tag, and known as her alias Mother Monster. Millennia Invasion comes with two different versions: The normal version with 50,000+ monsters and high resolution textures, and a lite version without high resolution textures and has 10,000+ monsters. The level itself pays tributes to one of the levels in Doomguy's Warzone Gold Edition, 30,000 Levels, Heaven, UAC Military Nightmare, and The Worst Level Ever Made.

During release, it was poorly received due to a number of factors. The level is based off the  prison section. Other complaints include, the joke build time of 5,000 years, death traps in most of the rooms, or some of them with random props. Some of the enemies can kill the player even in God mode. It was however, praised for the Jukebox in one of the rooms as it contains 40 different MIDI tracks.

A decade later, the author has updated the WAD fixing bugs, including true color high resolution graphics, and a small amount of new content that's discussed in his change log.

Secrets
There are no official secrets on this map.

Speedrunning
As this level does not contain official secrets, the NM 100S category is redundant.

Current records
The records for the map at the Doom Speed Demo Archive are:

The (absence of) data was last verified in its entirety on December 24, 2022.

Things
This level contains the following numbers of things per skill level:

Trivia

 * The resources of the level were also used in by Uncle Cracker.