A game demo is a trial version of a

video game A video game or computer game is an electronic game that involves interaction with a user interface or input device (such as a joystick, game controller, controller, computer keyboard, keyboard, or motion sensing device) to generate visual fe ...

that is limited to a certain time period or a point in progress. A game demo comes in forms such as

shareware Shareware is a type of proprietary software that is initially shared by the owner for trial use at little or no cost. Often the software has limited functionality or incomplete documentation until the user sends payment to the software developer. ...

, demo discs, downloadable software, and tech demos.

Distribution

In the early 1990s,

distribution was a popular method for publishing games for smaller developers, including then-fledgling companies such as Apogee Software (now 3D Realms), Epic MegaGames (now

Epic Games Epic Games, Inc. is an American Video game developer, video game and software development, software developer and video game publisher, publisher based in Cary, North Carolina. The company was founded by Tim Sweeney (game developer), Tim Sween ...

), and

id Software id Software LLC () is an American video game developer based in Richardson, Texas. It was founded on February 1, 1991, by four members of the computer company Softdisk: game programmer, programmers John Carmack and John Romero, game designer T ...

. It gave consumers the chance to try a trial portion of the game, usually restricted to the game's complete first section or "episode", before purchasing the rest of the adventure. Racks of games on single 5" and later 3.5"

floppy disk A floppy disk or floppy diskette (casually referred to as a floppy, a diskette, or a disk) is a type of disk storage composed of a thin and flexible disk of a magnetic storage medium in a square or nearly square plastic enclosure lined with a ...

s were common in many stores, often very cheaply. Since the shareware versions were essentially free, the cost only needed to cover the disk and minimal packaging. Sometimes, the demo disks were packaged within the box of another game by the same company. As the increasing size of games in the mid-1990s made them impractical to fit on floppy disks, and retail publishers and developers began to earnestly mimic the practice, shareware games were replaced by shorter demos that were either distributed free on CDs with gaming magazines or as free

download In computer networks, download means to ''receive'' data from a remote system, typically a server such as a web server, an FTP server, an email server, or other similar systems. This contrasts with uploading, where data is ''sent to'' a remote ...

s over the Internet, in some cases becoming exclusive content for specific

website A website (also written as a web site) is any web page whose content is identified by a common domain name and is published on at least one web server. Websites are typically dedicated to a particular topic or purpose, such as news, educatio ...

s. Shareware was also the distribution method of choice of early modern

first-person shooter A first-person shooter (FPS) is a video game genre, video game centered on gun fighting and other weapon-based combat seen from a First person (video games), first-person perspective, with the player experiencing the action directly through t ...

s (FPS). There is a technical difference between shareware and demos. Up to the early 1990s, shareware could easily be upgraded to the full version by adding the "other episodes" or full portion of the game; this would leave the existing shareware files intact. Demos are different in that they are "self-contained" programs that cannot be upgraded to the full version. An example is the Descent shareware versus the Descent II demo; players were able to retain their saved games on the former but not the latter.

Magazine A magazine is a periodical literature, periodical publication, print or digital, produced on a regular schedule, that contains any of a variety of subject-oriented textual and visual content (media), content forms. Magazines are generally fin ...

s that include the demos on a CD or DVD and likewise may be exclusive to a certain publication. Demos are also sometimes released on cover tape/disks, especially in the

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and

mainland Europe Continental Europe or mainland Europe is the contiguous mainland of Europe, excluding its surrounding islands. It can also be referred to ambiguously as the European continent, – which can conversely mean the whole of Europe – and, by so ...

, but given the increasing size of demos and widespread availability of broadband Internet, this common practice throughout the 1980s and 1990s gradually lost cover focus to full games. With the advent of online services for consoles, demos are also becoming available as a free or premium download.{{Cite web , title=Everything you need to know about making and releasing a demo , url=https://www.gamesindustry.biz/articles/2020-12-04-everything-you-need-to-know-about-making-and-releasing-a-demo , access-date=2021-11-15 , website=GamesIndustry.biz , date=4 December 2020 , language=en Console manufacturers also often release their systems with a demo disc containing playable previews of games to be released for their console.

Medium

The availability of demos varies between formats. Systems that use cartridges typically did not have demos available to them, unless they happen to be digital, due to the cost of duplication, whereas systems supporting more cheaply produced media, such as tapes,

s, and later

CD-ROM A CD-ROM (, compact disc read-only memory) is a type of read-only memory consisting of a pre-pressed optical compact disc that contains computer data storage, data computers can read, but not write or erase. Some CDs, called enhanced CDs, hold b ...

and DVD-ROM, do. Now, the

Internet The Internet (or internet) is the Global network, global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a internetworking, network of networks ...

is the main source for demos, as nearly all game developers and platforms focus on online distribution.

Types

Game demos come in two variations: playable and non-playable (also called a "rolling demo"). Playable demos generally have exactly the same

gameplay Gameplay is the specific way in which players interact with a game. The term applies to both video games and Tabletop game, tabletop games. Gameplay is the connection between the player and the game, the player's overcoming of challenges, and t ...

as the upcoming full game, although game advancement is usually limited to a certain point, and occasionally some advanced features might be disabled. A non-playable demo is essentially the gaming equivalent of a

teaser trailer A teaser trailer, also shortened to teaser, is a short trailer (promotion), trailer and a form of teaser campaign advertising that focuses on film and television programming. It is a videography pre-release film or television show advertisement. Sh ...

Playable

Generally, playable demos are stripped-down versions of the full game, restricting game-play to some

level Level or levels may refer to: Engineering *Level (optical instrument), a device used to measure true horizontal or relative heights * Spirit level or bubble level, an instrument designed to indicate whether a surface is horizontal or vertical *C ...

s, only allowing access to some features, or limiting the amount of time playable in the game. Half-Life 2 Demo

However, some demos provide content not available in the full game. In other cases, a demo may differ from the equivalent section in the full game, when the demo is released as a preview before the full game is completed. Demos for platform or other

action game An action game is a video game genre that emphasizes physical challenges, including hand–eye coordination and reaction time. The genre includes a large variety of sub-genres, such as fighting games, beat 'em ups, shooter games, rhythm games and ...

s generally only include the first few levels of the game. Demos of

adventure game An adventure game is a video game genre in which the player assumes the role of a protagonist in an interactive story, driven by exploration and/or puzzle-solving. The genre's focus on story allows it to draw heavily from other narrative-based m ...

s are often limited to a very small number of rooms, and have the " save game" feature disabled. Demos of

sports game A sports video game is a video game that simulates the practice of sports. Most sports have been recreated with video games, including team sports, track and field, extreme sports, and combat sports. Some games emphasize playing the sport (such ...

s usually limit play to an accelerated half-time or complete match between a small number of teams (which at the same time led to the practice of "demo expanders" that allow the tweaking of some of those settings). Likewise, demos of

racing game Racing games are a video game genre in which the player participates in a motor racing, racing competition. They may be based on anything from real-world racing leagues to fantastical settings. They are distributed along a spectrum between more re ...

s are ordinarily restricted to a single race with a pre-selected car.

Non-playable

A non-playable demo is a recording of game-play, either recorded in a video, or played through using the game's own engine showing off the game's features. They are mainly displayed at gaming conventions, such as E3, when the game is still in early production as a technology or game-play preview. Such demos might also be distributed through the Internet or with magazines as trailers for an upcoming game, or featured at retail stores (often among playable demos). Most games also play demos if the title screen is left running.

References