* '''Published:''' July 1984 * '''Publisher:''' TSR * '''Author:''' Frank Mentzer * '''Format:''' Boxed set * '''Rules:''' Classic D&D * '''Product:''' * [[https://rpggeek.com/rpgitem/44967/dungeons-dragons-set-3-companion-rules|RPG Geek]] * [[https://index.rpg.net/display-entry.phtml?mainid=3117|RPG Net]] * [[http://tomeoftreasures.com/tot_dnd/corerules/companionrules.htm|Tome of Treasures]] * [[http://tsr.bothgunsblazing.com/dd/dd-cbox.htm|TSR Archive]] * [[wp>Dungeons_%26_Dragons_Basic_Set#1983_revision|Wikipedia]]
For character levels 15-25
Players Companion - Featuring rules for unarmed combat, strongholds, and new weapons and armor. Plus more advanced rules and spells or your characters.
Dungeon Masters Companion - New rules or ruling realms and the clash of kingdoms. New treasures and monsters. Plus new adventures for your high-level characters.