# Demo

Demo may stand for:

- A special kind of computer program made as a non-interactive audiovisual art. See demoscene.
- A non-video recording of game play (sometimes also called a *replay*), typically implemented as a recording of user inputs in a deterministic game, or by only recording game state information (such as player positions at each frame etc.). These kinds of demos were in games such as Doom and Quake. The advantages of demos include much smaller size compared to a video, as well as being able to play them back with different graphic settings, ability to detect cheating (i.e. verifying the game inputs are correct and humanly feasible) etc.
- A significantly limited gratis trial version of an otherwise paid program. This term and "business model" was popular around the 2000s, when demo versions of programs (such as games) were distributed e.g. on CDs in magazines for user to try out and potentially buy the full version.
- ...