I collect text adventure games. I prefer the games from the period when they were called 'text adventure games' rather than 'interactive fuction'. My collection includes:

1. Classic Text Adventure Masterpieces from Infocom CD-ROM. Goes for aout $70 on ebay, even without the box.
2. All of the Infocom games including complete with 'feelies':
3. Zork Trilogy (with the Zorkmid)
4. The Magnetic Scrolls Collection vol. 1