Elysium (Analysis Lessons)

The Elysium was a spaceship.

History
In the 2010s, the Eleventh Doctor was on the Elysium as it was crashing, so he sent out a hurried distress message to anybody who could hear him, telling them that everything depended on them, before the message cut out. (WC: Analysis Lessons)

Behind the scenes

 * Although the Elysium debuted in the 2011 web mini-episode Analysis Lessons, the mini-episode was deliberately cryptic about everything it teased, such as the situation the Eleventh Doctor was in and virtually everything about what the Elysium was; this was done to entice viewers to attend to immersive experience and actively participate in the plot the mini-episode was alluding to. Therefore, this means that Analysis Lessons, by itself, provides a very incomplete story about the spaceship. The reason this Wiki does not provide details about the Elysium in the main portion of this article is because we currently deem all stage plays as invalid sources due to the inability to precisely determine every detail in a given stage play when it can vary between performances.
 * The reason why this Elysium and the 19th century Earth steamship, also prominently featured in the marketing for the experience, share the same name is completely unexplained.

Information from invalid sources
The Elysium was a spaceship containing essentially an art gallery, however one of the exhibits, a Weeping Angel, broke free and began moving about the ship, so the Eleventh Doctor arrived and evacuated everyone on board before they could be found by the Angel, however in the process he lost access to the TARDIS, so he left instructions contained within a will, video recordings, and a TARDIS key to aid anyone to return his TARDIS to him.

The Elysium then crashed in Manchester 2011 or Ipswich 2012, depending on the variation of the source, whereupon the army enlisted the help of a group of humans currently visiting a historical exhibit about an Earth steamship also called the Elysium into helping them enter the spaceship and discover why it crashed, while coming across the Doctor's clues, the Weeping Angel, and security robots. After reaching the flight deck and subsequently fleeing due to the security robots, the group was then advanced on by the Angel who sent them to a fairground in 1888.

After finding the TARDIS at the fairground and returning it to the Doctor by inserting the key, which was now imbued with artron energy after their trip through time, they returned to the Elysium by using a vortex manipulator left for them by the Doctor. On the spaceship, they found themselves being advanced on by multiple Weeping Angels, so the army got the group to reactivate the ship's Christofi Warp Drive with more artron energy to merge the Angels into the walls, preventing them from doing any harm. After returning to 21st century ground, they discovered that the Doctor had left them all letters thanking them for their help. (STAGE: The Crash of the Elysium)