Joe Dever’s famous Lone Wolf series of gamebooks was immensely popular. Not only did these two men make over 30 gamebooks, and later grant rights to have them freely published online, but they also created a really fun video game.
It’s a really well done combination of book (lots of text and illustrations), multimedia video (narrated by Joe Dever!), and video game (skill tests and combat are a hybrid of turn-based and quick-time events).
The story is good, the adventure is lengthy and fun, and… it only costs about $7 for easily 20 hours of entertainment.