|This page documents an English Wikipedia content guideline.|
|This page in a nutshell: Spoilers are no different from any other content and should not be deleted solely because they are spoilers.|
Wikipedia articles may include spoilers and no spoiler warnings. A spoiler is a piece of information about a narrative work (such as a book, film, television series, or a video game) that reveals plot points or twists. Articles on the Internet sometimes feature a spoiler warning to alert readers to spoilers in the text, which they may then choose to avoid reading. Wikipedia previously included such warnings in some articles, but no longer does so, except for the content disclaimer and section headings (such as "Plot" or "Ending"), which imply the presence of spoilers. The "No disclaimers in articles" guideline explains why spoiler warnings are no longer used on Wikipedia.
It is not acceptable to delete information from an article because you think it spoils the plot. Such concerns must not interfere with neutral point of view, encyclopedic tone, completeness, or any other element of article quality (e.g., the lead section). When including spoilers, editors should make sure that an encyclopedic purpose is being served. Articles on a work of fiction should primarily describe it from a real-world perspective, discussing its reception, impact and significance.
This guidance also applies to other relevant information beyond simple plot elements, such as "surprise" casting information for a publicly-released film. Other aspects beyond prose, such as infobox materials and categories, are also considered to be within this guidance; it is not acceptable to remove a category that is otherwise well-defining for the work's plot that otherwise could be considered to spoil the plot.
The same reasoning for including spoilers when appropriate in articles on works of fiction applies to other types of "spoilers" as well; for example, the optimal strategy for games such as tic-tac-toe, the workings of magic tricks, the solutions to logic puzzles, the answers to riddles, the results of reality television programs, and live radio and television events broadcast on a delay in certain areas of the world such as the Eurovision Song Contest and the Olympics.
But note that this does not mean such information must be included, either. Wikipedia is not a textbook, instruction manual, or video game guide; it should contain information appropriate to an encyclopedia article on the subject.
Before 2007, spoiler warnings, also known as spoiler disclaimers, were a frequent occurrence in Wikipedia articles about works of fiction. However, by 2007, some editors were also including spoiler warnings in articles about myths, folklore, fairy tales, and even biblical stories. After such a warning wasto the article about The Three Little Pigs, other editors took notice and began questioning the prolific and unrestricted use of the disclaimers. After a series of long, contentious discussions, several issues with spoiler warnings were identified:
Supporters of spoiler warnings pointed out that it had become common practice on the Internet to give a warning about potential spoilers any time plot details were discussed—especially details about how a work of fiction ends—and that readers had come to expect such warnings as a form of courtesy even when most readers will ignore the disclaimers. Because of this, they argued that Wikipedia's policies and guidelines should not apply. However, editors could not reach a consensus about whether the presence of spoiler warnings in articles was an improvement to Wikipedia.