I thought a particular standout was Shines the Name by Mark Acres, based on Heinlein's Starship Troopers . I'm one of those people from whom puns just erupt, so the Xanth license was perfect for me, and Xanth is perfect for chosen-path adventures. The best stories are personal quests where the protagonist has a set goal. Peppering the plot with putrid puns was a pleasure. Not unless the market turns back toward game-books.
Children are more sophisticated now.
I'd have to put Keith and the Folk into a computer game.