Basically, [[http://www.fanfiction.net/s/8112915/1/Zombies/ what happens when an extra life goes horribly wrong?]]

A bite from a Goomba transmits a viscious disease to the hero of the Mushroom Kingdom, and when Mario makes his way back to the castle, matters only get worse when he starts eating the mushroom people and turning them into flesh-eating monsters. The story continues with gritty visuals and is NotSafeForWork by any means, and every chapter so far is covered with explicit gore of some kind. The narratives bounces between the past and the CrapsackWorld of the present, and there are plenty of crossovers with characters from the Sonic, Legend of Zelda, Castlevania, and Megaman games.

Written by Fanfiction of the Dead.

----

!! This fanfic contains examples of:

* AndThenJohnWasAZombie
* AnyoneCanDie: The first character to turn into a zombie is Mario, and [[FromBadToWorse it only goes downhill from there]].
* {{Cliffhanger}}: Let's just say the story ends somewhat abruptly...
* DecoyProtagonist: Besides Mario, who started the outbreak, there's [[spoiler:Princess Peach]] and [[spoiler:Sonic]]. Both are bitten in the first chapter they appear in, yet neither of them turn into zombies, and [[spoiler:Peach]] managed to heal the wound with magic. [[spoiler:It isn't until the end of chapter 6 that they finally succumb to the infection and start killing other characters]].
* OurZombiesAreDifferent: Type M. The zombies, mostly referred to as 'creatures', eat flesh, spread the infection which reanimates it's victims, but it hasn't been explained what actually created these zombies. Most characters refer to them as a "plague" but none are absolutely sure. Takes cues from an old zombie film called "Braindead" where even appendages and body parts are reanimated.
* RaisingTheSteaks: There are undead mushrooms (Toads) walking around, [[spoiler: and Goombas, Parakoopas, hedgehogs, and princesses...]]
** [[spoiler: Things really hit the fan during TheStinger when a Colossi, the Phalanx; a winged behemoth from ''Shadows of the Colossus, appears after being bitten... the Colossi are humongous, unnatural beings and even they can be afflicted.]]
* RemovingTheHeadOrDestroyingTheBrain: This is Mario's method of taking down Goombas normally. In the first chapter, [[spoiler: this DOESN'T work.]]
* ScrewThisImOuttaHere: Tails after [[spoiler:Rotor, Bunnie, and Antonie are all killed by a zombified Peach and Sonic]].
* SequelHook
* ZombieApocalypse: The premise.