Dan's Diminutive d20 is a free, minimal offshoot of the d20 System, published under the Open Game License. It assumes familiarity and use of the 3rd Edition System Reference Document (plus open game content from Unearthed Arcana). Major features include:

• Generic Classes: 3 core classes (Fighter, Rogue, and Wizard), with easy-to-remember saves and skills.
• Limited Levels and Magic: Just 12 character levels, with 5 magic items maximum.
• Level-Based Skills and Uniform Feats: No recording skill points. Fighters just get one feat every level; no table-lookups required.
• Equipment in Brief: Your core adventuring needs, with a unique measuring system that makes encumbrance a snap.
• Monsters Redux: All the major monsters, reduced to fit in just 3 pages.

Dan's Diminutive d20 is a free PDF publication (12 pages, 204 KB). Tips are welcome, donate below. And if you'd like to comment on this publication, visit the official blog here.