64K intro

The demoscene () is an international computer art subculture focused on producing demos: self-contained, sometimes extremely small, computer programs that produce audiovisual presentations. The purpose of a demo is to show off programming, visual art, and musical skills. Demos and other demoscene productions (graphics, music, videos, games) are shared, voted on and released online at festivals known as demoparties.

The scene started with the home computer revolution of the early 1980s, and the subsequent advent of software cracking. Crackers altered the code of computer games to remove copy protection, claiming credit by adding introduction screens of their own (" cracktros"). They soon started competing for the best visual presentation of these additions. Through the making of intros and stand-alone demos, a new community eventually evolved, independent of the gaming and software sharing scenes.

Demos are informally classified into several categories, mainly of size-restricted intros. The most typical competition categories for intros are the 64k intro and the 4K intro, where the size of the executable file is restricted to 65536 and 4096 bytes, respectively. In other competitions the choice of platform is restricted; only 8-bit computers like the Atari 800 or Commodore 64, or the 16-bit Amiga or Atari ST. Such restrictions provide a challenge for coders, musicians, and graphics artists, to make a device do more than was intended in its original design.

History

The earliest computer programs that have some resemblance to demos and demo effects can be found among the so-called display hacks. Display hacks predate the demoscene by several decades, with the earliest examples dating back to the early 1950s.

Demos in the demoscene sense began as software crackers' "signatures", that is, crack screens and crack intros attached to software whose copy protection was removed. The first crack screens appeared on the Apple II in the early 1980s, and they were often nothing but plain text screens crediting the cracker or their group. Gradually, these static screens evolved into increasingly impressive-looking introductions containing animated effects and music. Eventually, many cracker groups started to release intro-like programs separately, without being attached to unlicensed software. These programs were initially known by various names, such as ''letters'' or ''messages'', but they later came to be known as ''demos''.

In 1980, Atari, Inc. began using a looping demo with visual effects and music to show the features of the Atari 8-bit computers, Atari 400/800 computers in stores. At the 1985 Consumer Electronics Show, Atari showed a demoscene-style demo for its latest 8-bit computers that alternated between a 3D walking robot and a flying spaceship, each with its own music, and animating larger objects than typically seen on those systems; the two sections were separated by the Atari logo. The program was released to the public. Also in 1985, a large, spinning, checkered ball—casting a translucent shadow—was the signature demo of what the hardware was capable of when Commodore's Amiga was announced.

Simple demo-like music collections were put together on the C64 in 1985 by Charles Deenen, inspired by crack intros, using music taken from games and adding some homemade color graphics. In the following year, the movement now known as the demoscene was born. The Dutch groups 1001 Crew and The Judges, both Commodore 64-based, are often mentioned among the earliest demo groups. While competing with each other in 1986, they both produced pure demos with original graphics and music involving more than just casual work, and used extensive hardware trickery. At the same time demos from others, such as Antony Crowther, had started circulating on Compunet in the United Kingdom.

Culture

The demoscene is mainly a European phenomenon. It is a competition-oriented subculture, with groups and individual artists competing against each other in technical and artistic excellence. Those who achieve excellence are dubbed "elite", while those who do not follow the demoscene's implicit rules are called "lamers"; such rules emphasize creativity over "ripping" (or else using with permission) the works of others, having good contacts within the scene, and showing effort rather than asking for help. Both this competitiveness and the sense of cooperation among demosceners have led to comparisons with the earlier hacker culture in academic computing. The demoscene is a closed subculture, which seeks and receives little mainstream public interest. , the size of the scene was estimated at some 10,000.

In the early days, competition came in the form of setting records, like the number of "bobs" ( blitter objects) on the screen per frame, or the number of DYCP (Different Y Character Position) scrollers on a C64. These days, there are organized competitions, or compos, held at demoparties, although there have been some online competitions. It has also been common for diskmags to have voting-based charts which provide ranking lists for the best coders, graphicians, musicians, demos and other things.

In 2020, Finland added its demoscene to its national UNESCO list of intangible cultural heritage. It is the first digital subculture to be put on an intangible cultural heritage list.
In 2021, Germany and Poland also added its demoscene to its national UNESCO list of intangible cultural heritage, followed by Netherlands in 2023 with Sweden and France in 2025.

Groups

Demosceners typically organize in small groups, centered around a coder (programmer), a musician, a graphician (graphics designer) and a swapper (who spreads their own and others' creations by mail).

Groups always have names, and similarly the individual members pick a handle by which they will be addressed in the large community. While the practice of using handles rather than real names is a borrowing from the cracker/warez culture, where it serves to hide the identity of the cracker from law enforcement, in the demoscene (oriented toward legal activities) it mostly serves as a manner of self-expression. Group members tend to self-identify with the group, often extending their handle with their group's name, following the patterns "''Handle'' of ''Group''" or "''Handle''/''Group''".

Parties

A demoparty is an event where demosceners and other computer enthusiasts gather to take part in competitions, nicknamed ''compos'', where they present demos (short audio-visual presentations of computer art) and other works such as digital art and music. A typical demoparty is a non-stop event spanning a weekend, providing the visitors a lot of time to socialize. The competing works, at least those in the most important competitions, are usually shown at night, using a video projector and loudspeakers.

The most important competition is usually the ''demo compo''. The Assembly is the biggest demoscene party. The Gathering became more of a players' party, the worlds largest computerparty.

Concept

The visitors of a demoparty often bring their own computers to compete and show their works. To this end, most parties provide a large hall with tables, electricity and usually a local area network connected to the Internet. In this respect, many demoparties resemble LAN parties, and many of the largest events also gather gamers and other computer enthusiasts in addition to demosceners. A major difference between a real demoparty and a LAN party is that demosceners typically spend more time socializing (often outside the actual party hall) than in front of their computers.

List of demoparties

64K intro

A 64K intro is a demo with an executable file size limit of 64 kibibytes, or 65,536 bytes. This is a traditional limit inherited from the maximum size of a COM file. Demos traditionally were limited by RAM size, or later by storage size. By the early 1990s, demo sizes grew, so categories were created for limited sizes that forced developers to not simply stream data from storage.

To reduce the file size, 64K intros often use executable compression and procedural generation, such as sound synthesis, mesh generation, procedural textures, and procedural animation.

fr-08, a 64k PC demo by Farbrausch released at The Party 2000 in Aars

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