Some of you may be familiar with Frotz; it's a Z-machine, used to read and, therefore, play interactive fiction. Yes, that's "text adventures" for you old timers. Now that the app has made it to the iPhone, we can explore Zork's Great Underground Empire from anywhere. The app is free, comes with a bunch of public-domain IF titles, and you can "specify other download repositories" if you're more interested in nabbing some of those Infocom classics. Might we recommend Steve Meretzky's classic Leather Goddesses of Phobos?