Core Campaign Books:
Dungeon Master Guide
With the following alterations:
1.- All GP prices must be translated to Cages. Anything worth something different than GP, must be translated to GP and then translated to Cages. This is the only case when 1 GP = 1 Cage (See Equipment).
Optional Campaign Books:
Defender’s of the Faith
With the following considerations:
1.- Anything from these books is normally allowed, but everything must be consulted with the DM, because there’s some feats, spells, and abilities that became faction restrictive, among other things.
Player’s Handbook
Psionic’s Handbook
Monster Manual 1 & 2
Fiend Folio
2.- Some monster entries have been converted from second edition, these entries have precedence over the Monster Manuals.
3.- House rules override anything that conflicts with these manuals.
Masters of the Wild
Tome and Blood
Song and Silence
Sword and Fist
Forgotten Realms – Campaign Setting
Rokugan - Campaign Setting
Oriental Adventures
Magic of Faerun
Deities & Demigods
Stronghold Builder’s Guidebook
Manual of the Planes
Savage Species
Complete Handbooks
And many others mostly thanks to Manualman!
2.- Any other source is welcome to consideration. If the player wants to take a Quintessential feat or whatever there’s in another source book, just ask the DM.
3.- Anything from the Manual of the Planes must be used as a guide only, not a rule, unless specifically told by the DM (probably, most content will be included as a rule but gradually, when problems or conflicts arises).