
Originally Posted by
NickMiddleton
Primarily the magic system IIRC. Four is the edition Ben Monroe worked on that introduced the more complex, nuanced Demon breeds and powers system, but I don't remember and huge changes to other systems - but is been years sinc I looked a my copy.
Cheers,
Nick
The rest of the book remains unchanged from the GW hardcover of SB3. The only things I altered aside from the sorcery rules, where any place in the book where those rules came into effect. E.G.: updating all of the NPC demon weapons to the new system.
Please note I do not actually work for Chaosium; I just do the occasional freelance editing work for them.