''Microlite 20'' is a simplified version of the TabletopGame/{{d20|system}} 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 TabletopGame/{{D20 Modern}} and TabletopGame/CallOfCthulhu have been made, along with basic rules for a Franchise/ResidentEvil campaign, Franchise/StarWars, Westerns, and several others have been made, and more are in the works, including ''TabletopGame/GammaWorld'' and the Franchise/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 places to find the pdfs would be [[https://web.archive.org/web/20130321011454/http://arthur.jfmi.net/m20/ here]] and [[http://www.retroroleplaying.com/content/microlite20-rpg-collection here]].

[[http://www.tor.com/2008/07/28/rpgsreviewmicrolited20/ Bruce Blaugh has reviewed it]].

!!This game provides examples of:

* CastFromHitPoints: The default magic system has spells cost HP.
* ClassAndLevelSystem
* FighterMageThief: Along with clerics, the four base classes.
* {{Minimalism}}