Howard Sherman and Malinche Entertainment are bringing the old-fashioned text-based advernture games (like those choose-your-own-ending fiction books) to iPods. The first title is called The First Mile and costs $9.95.
"The First Mile, as well as existing Malinche titles Pentari: First Light and Greystone, have also been released for cell phones using the PalmOS or Symbian operating systems. At some point, Sherman expects one portable system to become standardized, but until then, he is marketing to every group." -- Wired