Libro: Swords & Wizardry Complete Revised POD

Swords & Wizardry is the ENNIE award-winning retro-clone of the original 1974-1978 rules for Dungeons & Dragons*, an edition usually called Original D&D or "OD&D." If you want to play a fast-moving, easy-to-learn fantasy roleplaying game, this timeless edition is one of the most popular OSR ("Old School Renaissance") editions and has been around since 2008.
This is a complete game, with rules for character generation, monsters, magic items, encounter tables -- the whole works. It is non-OGL: the original game is re-created using the creative commons grant from Wizards of the Coast, and is released under the AELF License.
This version includes several additions and revisions to earlier versions. The "random castles" material is added, morale rules are added, and spell research rules are added. The treasure tables are revamped, and errata from earlier versions is now incorporated into the book.
*Mythmere Games isn't affiliated with Wizards of the Coast, the publishers and trademark holders of D&D. Swords & Wizardry isn't compatible or designed for use with modern D&D -- it replicates a MUCH older version of the D&D game rules.