Game Ideas Wiki:Glossary

You may be looking for a similar glossary.

Many answers are best described by TV Tropes.

Canon
Official facts about a series, based on what the developers/creators decide. As opposed to Fanon

Encyclopedia
"A book or set of books giving information on many subjects or on many aspects of one subject and typically arranged alphabetically." Or, just think of Wikipedia.

Fanon
Fan based information about a game that is not officially acknowledged by the game's creator(s). This site is concidered fanon, as it contains many "facts" about characters and their games differently than their creators officially recognize. As opposed to Canon. See related Fan Theories.

Fan Theories
Guesses by fans about the facts of a game. Notably, this category contains conspiracy theories, and many as wildly incorrect as often as it is unusually right on.

Spoiler
Information that gives away details about a plot before the user experiences or finds out in the story. Usually "ruins the ending", as this information may reveal who dies, who wins, and what the epilogue explains before the gamer progresses to that point.