Microlite20 is a simplified version of the D20 SRD; So simplified, in fact, that the core rules are less than 1100 words long.

The rules, while simple, are incredibly modular; They're designed to work with near any D20 supplement, and adaptions of {{D20 Modern}} and TabletopGame/CallOfCthulhu have been made, along with basic rules for a Franchise/ResidentEvil campaign, StarWars, Westerns, and several others have been made, and more are in the works, including ''TabletopGame/GammaWorld'' and the ConanTheBarbarian RPG.

The main site for it was [[http://microlite20.net/ here]], before the creator lost interest in the project and handed it to somebody else. The new project maintainer has an existing forum community, but the best place to find the pdfs would be [[https://web.archive.org/web/20130321011454/http://arthur.jfmi.net/m20/ here]].

[[http://www.tor.com/index.php?option=com_content&view=blog&id=2203 Bruce Blaugh has reviewed it]].

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!!This game provides examples of:
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* Main/CastFromHitPoints: The default magic system has spells cost HP.