Sure, it's doable, but personally, if I planned to do one, I'd rather follow a book that's already written and just copy it in. Because of the work involved, I'd prefer it to be one of the simpler books for younger people, not one of the d'n'd books for more adult readers (adult as in reading level, not situations which I wouldn't write anyway and Molly wouldn't accept!)
You can compare these two (not well, but I think they give a sense of the difference between them):
http://www.fightingfantasygamebooks.com/index.php?option=com_content&view=article&id=45&Itemid=9http://www.cyoa.com/collections/classics/products/the-abominable-snowmanRight now all my books are in storage so I can't give better examples. If you need a fix of interactive fiction now, you can try:
http://chooseyourstory.com/Stories/There's more info on different types of interactive, there's a wikipedia article:
http://en.wikipedia.org/wiki/GamebookI have to admit that the subject interests me to the extent that many of my partly written zones are done with interactive elements. This makes them interesting for muds that only have one person on at a time, but not so good if there's a chance of two people being in the zone at the same time.
