The ROLEMASTER COMPANION is a must for all ROLEMASTER and FRP fans! Every aspect of I.C.E.'s classic FRP system is expanded with optional rules and guidelines. To SPELL LAW new Spells and Spell Lists along with natural phenomena and Arcane Magic are added. For CHARACTER LAW, new character classes and new races appear! The ROLEMASTER COMPANION also adds a wealth of new material to CREATURES & TREASURES, including the construction of magical items and plenty of new creatures to populate your world. Many new optional rules for ARMS LAW, such as a condensed combat system, are included. For the Gamesmaster, CAMPAIGN LAW is expanded with a system for generating populations as well as numerous game aids to help in the running of a smooth campaign.
I loved the Rolemaster Companions. They gave you SO many suplimental rules, new character classes (battle-mage!), and items that you couldn't possibly use them all. But you could read them all.
The Rolemaster Companion series would eventually become burdensome, but this first one offers useful expansions and clarifications for the system. Full review: https://refereeingandreflection.wordp...
Like Chris mentions below, plenty of fun reading about even more rules, character classes, etc, but seriously, can anyone actually play with so many rules?