Christopher Evans 
Twilight Realm [EPUB ebook] 

It’s just a fantasy role-playing game. Until the game becomes reality . . .Friday night is games night. But one special Friday, Paul and his four friends are transported into the heart of their own game, to the strange, bleak land of Xhandarre . . .Where reality vanishes, and the five players assume new and exciting identities – with new and exciting power.Where hostile tree dwellers, predatory birds, and flesh-eating werewolves lash out from darkened shadows. And where the evil sorcerer Avron Kromar holds the key to freedom.Can Paul and his friends survive their strange, new world? Can they escape its treacherous dangers? And if they can escape, do they really want to return to reality?(First published in 1985 as by Christopher Carpenter)