Alternate Timeline (The End)

Alternate Universe 2014 is an alternate timeline set in 2014, which could only come about had Sam Winchester assented to possession to Lucifer, thus granting the archangel victory and allowing the Apocalypse to decimate the human population. It is one of the multiple Alternate Universes shown in Supernatural.

History
In order to show Dean the consequences of refusing to say "Yes" to Michael, Zachariah transports him to this alternate timeline.

This timeline occurred shortly after Sam and Dean went their separate ways, and Sam decided to give consent to Lucifer. In possession of his true vessel, Lucifer was able to win the war between Heaven and Hell and reduce humanity to the brink of extinction.

Many humans had become infected by the Croatoan Virus and turned into mindless zombies. The Host of Heaven had also disappeared, either by choice or by the powers of Jesse Turner, the Antichrist.

The last line of defense against The Apocalypse was Camp Chitaqua, a group of resistance fighters serving under Dean Winchester of that timeline. The members included a near-human Castiel and Chuck Shurley.

Present Dean goes to visit the survivors at Camp Chitaqua, where he discovers the changes of not only himself, but also his allies. Future Dean later brings him on a mission to kill Lucifer using the Colt, and orders his followers to act as bait.

Future Dean is ultimately killed while Present Dean is taken back to his own timeline, safe and sound.

Aftermath
Despite Zachariah's intentions to get Dean to say "Yes", the journey only convinces Dean to reunite with his brother to avoid this future. It is averted when Sam Winchester throws himself, along with Lucifer, Michael and Adam into Lucifer's Cage, thus ending The Apocalypse.

In the current timeline, the demon Abaddon had became a threat in 2014.

Major Changes

 * Lucifer won The Apocalypse.
 * The Host of Heaven is gone
 * Castiel appears to be permanently human.

Appearances

 * Season 5
 * The End

Trivia

 * Castiel is human in this universe as of 2014. The main Castiel also becomes human temporarily around the same time.