Crossovers occur any time characters from one work "cross over" into another. Any time characters from one work interact with another work, you have a crossover.
This is extremely common in Fan Fic, where the authors take someone else's characters and play with them, often introducing a new setting or new characters in order to better facilitate the story they want to write.
This is an index of the varying types of crossovers; Rule 50 may apply to some of these.
Main topic:
Tropes:
- Adaptation Amalgamation
- Bat Family Crossover
- Canon Welding
- Character Overlap
- Common Crossover
- Company Cross References
- Crisis Crossover
- Crossover Cosmology
- Crossover Finale
- Crossover Punchline
- Crossover Ship
- Deconstruction Crossover
- Doppelgänger Crossover
- Fairy Tale Free-for-All
- Fake Crossover
- Fully Absorbed Finale
- Fusion Fic
- Guest Fighter
- Hypothetical Fight Debate
- Intercontinuity Crossover
- Intra-Franchise Crossover
- Lawyer-Friendly Cameo
- Massive Multiplayer Crossover
- Modular Franchise
- Monster Mash
- Official Parody
- Original Generation
- Poorly Disguised Pilot
- Power Creep, Power Seep
- Red Skies Crossover
- Required Spinoff Crossover
- Story-Breaker Team-Up
- Spotlight-Stealing Crossover
- Team-Up Series
- Transplant
- Ultimate Showdown of Ultimate Destiny
- Weird Crossover
- The World as Myth
