A world in which Princess Peach is killed by Bowser during another chase, and Mario in desperation learns the same dark magic that the Koopa King has long since mastered, enslaving armies of Toads, Piantas, Lumas, and Yoshis to aid in his search. Bowser has buried the body somewhere, but refuses to tell the plumber of the location, and is now afraid to confront him.
A world in which Link is born a Gerudo vai, in service to the Gerudo King born some hundreds of years ago, and must now meet Zelda as an enemy, until the two women learn to cooperate and seek the best interest of all Hyrule.
A world in which Steve Rogers wears powered armor built by Howard Stark, whose son stumbles on a mystic sect after being abducted in the Middle East, and so Tony Stark becomes Sorcerer Supreme. Bruce Banner is given the powers of Captain Marvel when called to study the Faster Than Light engine, while Carol Danvers is taken to space after Ravagers steal a fighter jet with her in it.
A world in which a revolutionary Pokemon Professor studies the link between dead humans and Ghost Pokemon, and creates a PokeBall which can capture the human soul. Battle takes on a whole new form when you can store, train, and release the spirits of human beings!
A world in which Dust and Grimm are one and the same, where Huntresses must destroy their enemies and salvage the parts to fuel their weapons. Where Grimm feed on human souls directly, so every use of a person's Semblance draws a lot of unwanted attention.