Canon - In fiction, canon is the conceptual material accepted as "official" in a fictional universe's fan base. It is often contrasted with, or used as the basis for, works of fan fiction, which are not considered canonical. It is used in two slightly different meanings: first, "it refers to the overall set of storylines, premises, settings, and characters offered by the source media text". In this sense, canon is "the original work from which the fan fiction author borrows," or "the original media on which the fan fictions are based." Secondly, it is used "as a descriptor of specific incidents, relationships, or story arcs that take place within the overall canon"; thus certain incidents or relationships may be described as being canon or not. The alternative term mythology is often used, especially to refer either to a richly detailed fictional canon requiring a large degree of suspension of disbelief (e.g. an entire imaginary world and history), or to a central thread of storytelling running through a broad fictional canon that may episodically wander into many side plots with little connection to that thread. from: http://en.wikipedia.org/wiki/Canon_(fiction) 

Fan fiction (alternatively referred to as fanfiction, fanfic, FF, or fic) - a broadly-defined term for fan labor regarding stories about characters or settings written by fans of the original work, rather than by the original creator. Works of fan fiction are rarely commissioned or authorized by the original work's owner, creator, or publisher; also, they are almost never professionally published. Because of this, many fan fictions written often contain a disclaimer stating that the creator of the work owns none of the characters. Fan fiction, therefore, is defined by being both related to its subject's canonical fictional universe and simultaneously existing outside the canon of that universe. Most fan fiction writers assume that their work is read primarily by other fans, and therefore tend to presume that their readers have knowledge of the canon universe (created by a professional writer) in which their works are based. from: http://en.wikipedia.org/wiki/Fan_fiction

Interactive fiction (IF) “is software simulating environments in which players use text commands to control characters and influence the environment. Works in this form can be understood as literary narratives and as video games.[1] In common usage, the term refers to text adventures, a type of adventure game where the entire interface can be ‘text-only.’” from Wikipedia http://en.wikipedia.org/wiki/Interactive_fiction



Machinima - (machine + cinema) "is the use of real-time 3D computer graphics rendering engines to create a cinematic production. Most often, video games are used to generate the computer animation. Machinima-based artists, sometimes called machinimists or machinimators, are often fan laborers, by virtue of their re-use of copyrighted materials."  from: http://en.wikipedia.org/wiki/Machinima

Mashup (digital) - digital media content containing any or all of text, graphics, audio, video and animation drawn from pre-existing sources, to create a new derivative work. Other types of Mashups (music, book, video): http://en.wikipedia.org/wiki/Mashup. from: http://en.wikipedia.org/wiki/Mashup_(digital)