There's a CYOA game called Sorcery, and I love it.

You hail from Analand, trained by the best soldiers to be a champion for your country. The Crown of Kings, a powerful artifact, has been stolen by an evil Archmage, and taken back across a big wall nobody in Analand has crossed in like 40 years.

No one knows what going on outside the wall, but if the kingdom sent a big army they would be detected and accosted by the Archmage's full might along the whole way. The Archmage must be unaware of their mission until they are at the place itself.

So, like four adventurers cross the wall and go on an epic journey to get the Crown of Kings. The plot thickens, things are not as they seem, layers upon layers wheels upon wheels, yadda yadda.

I'll be the GM, and whoevers interested will teamwork it up with unique characters and be heroes.

Anyone interested?