The OSR Advanced Player Options books compiles several years of material into a single book designed to expand any OSR-style game.

Written for Old School Essentials it contains the following:

• Guidelines for running successful play-by-post games.
• A simple skill system.
• Rules for founding temples and using the divine energy that worship generates.
• Rules for improving magical weapons by performing feats of derring-do.
• A simple prestige class system based on rules from the BECMI Gazetteers
• A bunch of new race-as-class options including binder (from 3.x Tome of Magic) monk necromancer parrot-folk and more.
• Rules for researching spells and creating magical items.
• Rules for ritual spells.
• Dozens of new spells.

Hardcover smyth-sewn binding A5 black and white book A5 format. 340 pages.