Hey, I'm the DM running an ongoing campaign  set a "Thousand and One Arabian Nights" inspired world with a Sword & Sorcery veneer.  We're using Magic World, its an obscure system produced by Chaosium. Its basically uses the same rules as Call of Cthulhu and Runequest but meant for a medieval fantasy type of world. As such, t he system is very intuitive and knowledge of the rules is not a requirement. Newcomers and Veterans are all welcomed.