This category is for anime not based upon previously published material.
- If uncertain as to which anime to add to this category, check the credits to see if "based on xxx by yyy" or a similar credit is given.
- All anime original sequels are automatically considered adaptations since the sequel must be based on the original story.
- See Academy Award for Best Original Screenplay and Academy Award for Best Adapted Screenplay for examples of adapted and original screenplays. Note that even extremely altered screenplays such as O Brother, Where Art Thou? and Apocalypse Now are considered adapted.