Mushroom War

The **Mushroom War** (also known as the **Great Mushroom War**) was a mysterious yet destructive war that took place before the events of *Adventure Time*. However, it was one of the main causes that started most of the events throughout the series. It is mentioned and referenced throughout the series as Easter eggs.

## History

The cause of the Mushroom War is unknown but what's most notable about it is that it caused a lot of death and destruction to the world. The war took place a thousand years ago during modern-day Earth, back when there was less magic in the area and Humans were the dominant species. The war gets its name from the giant Mushroom Bomb explosion that went off at the end of the war.

### Aftermath

After the bomb went off it caused a lot of changes to the planet, with the biggest one for instance was that it brought magic to the world. The bomb also created and awakened all sorts of creatures and monsters that ravaged the world like Ooze Monsters, Vampires, Rainicorns, and the most notable of all was Finn and Jake's most evil and dangerous enemy, the Lich. It also left lots of the world in ruins with wrecked buildings, wrecked cars, littered weapons, skeletons on the ground, and the most notable wreckage of all was a large chunk taken out of the Earth. The war also caused lots of magical mutations like the animals somehow beginning to walk and talk and the lands transforming into what will be known as the Land of Ooo which was populated by strange, weird, and magical creatures. Some Humans were lucky enough to survive the war like Marceline, Ice King back when he was Simon, Betty, and Moe through magical or scientific means. There were also some Humans who managed to survive on their own but had to wear animal costumes to avoid the creatures and monsters that were created and unleashed after the war until the Humans eventually all left for island homes and began living humble normal lives within a new Human society with speculated fear of the outside world. This led to the Humans forming a police force called the Seekers to find and stop other Humans from leaving the islands which were known as the Hiders. They even built a giant robot to protect themselves and keep the Hiders from leaving known as the Guardian. However, the absence of Humans led to everyone in Ooo believing that they were all extinct and that Finn was the last of his kind. Evidence of the war is shown and/or mentioned by people throughout the Land of Ooo and it also led to the Attack of the Dark Cloud, the Fire Kingdom-Candy Kingdom War, the Gum War, and the Battle of Ooo.

### Alternate Timeline

When Finn and Jake tried to stop the Lich after he used the Enchiridion to go to Prismo the Wishmaster to wish for the extinction of all life, Finn made a wish that the Lich never existed. However, this created an alternate timeline where the Mushroom Bomb never went off because Simon used the Ice Crown to freeze and stop it which wound up killing him in the process. As a result of his death, the Ice Crown froze the Earth for four hundred years which turned it into a primitive Farmworld without magic, and some of the people were even changed differently as a result of it. However, the Mushroom Bomb eventually went off accidentally by Farmworld Finn who had found the Ice Crown and put it on to save his family which drove him insane in the process and caused Farmworld Jake to become possessed by the Lich. Main Jake was able to stop it by wishing that the Lich wished to send him and Finn back home before Finn made his wish. However, it didn't undo Farmworld because it still existed with Lich possessed Farmworld Jake becoming Farmworld Finn's master and together they froze all the people in Farmworld and tried to invade other worlds using Farmworld's Enchiridion but the main Finn and Jake came to stop them under orders from Prismo. During this, the Lich betrayed Farmworld Finn so both he and the main Finn used a weapon that was given to them by Prismo called the Maid to destroy the Lich and undo the Mushroom Bomb explosion. Which saved Farmworld and changed Farmworld Jake back to normal then Finn had Prismo destroy Farmworld's Ice Crown which returned Farmworld Finn back to normal and he reunited with his family. Finn also kept the Enchiridion from Farmworld which was later used to help undo the Elements spell on Ooo. But during the fight with the Lich on Farmworld, his hand got cut off and fell into the other worlds including the main Finn and Jake's world. The hand still contained a portion of the Lich's spirit and tried to make another Lich using Sweet P who was the main Finn and Jake's Lich that got turned into a child but Sweet P instead killed the hand using Finn's sword.

## Survivors of the War

### People

* Marceline
* Ice King/Simon
* Betty
* Moe
* Patience St. Pim
* Two Bread Tom
* Other Humans

### Monsters

* The Lich
* Ooze Monsters
* Vampires
	+ Vampire King
	+ The Fool
	+ The Empress
	+ The Hierophant
	+ The Moon
	+ Other Vampires
* Rainicorns
* Business Men
* Other Monsters

## Navigation

*Disney*: Operation W.A.R. • Robot Riot • Kree-Skrull War • Graviton's Attack • Gamma World • Kang's Invasion • War for the Cosmic Cube • Loki's War • Skrull Invasion • Assault on 42 • Invasion of Galactus • Asgardian-Symbiote Attack • Skirmish on the Tri-Carrier • Battle of the Web Warriors • Attack of the Synthezoids • Contest of Champions • Attack on the Triskelion • War of Carnage • Doctor Octopus' Last Attack • Mystery Shack Zombie Attack • Weirdmageddon Rebellion • Attack of Cosmic Skull • War of the Squadron Supreme • Invasion of Thanos • Ultron Revolution • Frozen Invasion • Secret Wars • Kree Invasion • Battle of Sarrish • Battle of Christophsis • Malevolence Campaign • Battle of Quell • Defense of Maridun • Battle of Orto Plutonia • Liberation of Ryloth • Skirmish on Felucia • Attack of the Zillo Beast • Second Battle of Geonosis • Battle of Saleucami • Skirmish aboard the Coronet • Attack on Kamino • Battle on Wasskah • Civil War of Mon Cala • Skirmish on Naboo • Battle of Umbara • Attack on Dathomir • Liberation of Onderon • Invasion of Scipio • Battle of Anaxes • Siege of Mandalore • Siege of Lasan • Attack on Phoenix Squadron • Assault on Seelos • Assault on Garel • Battle of Atollon • Liberation of Lothal • Asgard War • Symbiote War • Attack of Magus • Conquest of Serpent • Saporian War • Battle of Old Corona • Battle of Corona • Goblin War • Symbiote Invasion • Robot Revolution • Wakanda-Atlantis War • Battle of Jakku • Battle of Castilon • Battle of the Barabesh System • Toad Tower Heron Attack • Hunter vs. Alastair Feud • Newtopian Barbari-Ant Invasion • Toad Rebellion • Amphibia Revolution
*Nickelodeon*: Attack on the Shredder • Triceraton-Federation War • Attack on TCRI • Battle of the Battle Nexus • Triceraton Invasion of 2003 • Final Shredder Battle • Battle of the Five Dragons • Kraang-Triceraton War • Rat Wars • First Kraang Invasion • Second Kraang Invasion • Battle for New York • Triceraton Invasion of 2012 • War for Dimension X • Super Shredder Attacks • Invasion of the Netherworld • Invasion of Dregg • Monster Invasion • Carmageddon
*Movies*: Battle for Pride Rock • Lion War • War of the Brotherhood • Fight of the Stone Generals • Battle of the Red Death • Ogre Revolution • Battle of Gongmen City • War of the Brothers • Battle of Bricksburg • War of the Dragons • Battle of Panda Village • Battle of Gotham City • Garmadon's War • Battle of Ninjago • Brother-Sister War • Dragon Hunter Battle • Northuldra War • The Mitchells vs. The Machines Battle