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Homebrew is a term frequently applied to video games or other software produced by consumers to target proprietary hardware platforms (usually with hardware restrictions) that are not typically user-programmable or that use proprietary storage methods. This can include games developed with official development kits, such as Net Yaroze, Linux for PlayStation 2 or Microsoft XNA. A game written by a non-professional developer for a system intended to be consumer-programmable, like the Commodore 64, is simply called hobbyist (rather than Homebrew).
Along with the Dreamcast, Game Boy Advance, and PlayStation Portable, the most frequently used platforms for Homebrew development are older generations of consoles, among them the Atari 2600 and Nintendo Entertainment System (NES). The relative simplicity of older systems enables an individual or small group to develop acceptable games in a reasonable time frame.
All major sixth generation consoles are given attention in Homebrew development, but less so than earlier generations. This is mostly the case because software production requires more resources, accurate emulators do not exist yet, that the consoles themselves often employ rather complex systems to prevent the execution of unauthorized code, and that recent consoles are updated more often than older ones. Homebrew developers must often exploit loopholes to enable their software to run.
Homebrewing is not only limited to games; there are numerous demos that have been released for most systems with a Homebrew scene.

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