Marius Milner and Ben Collins-Sussman have released Twisty, a z-machine interpreter for Android:

The ‘z-machine’ is a virtual machine designed in 1979 by Infocom for playing text adventures, and has been re-implemented on nearly every computer and PDA since then.

This application allows Android users to play Infocom classics just as ‘Zork’, as well hundreds of newer text adventures written in the last ten years or so. The package comes bundled with a few built-in games, but also allows you to load games from your sdcard.

It is fantastic to see all of the porting work going on to get stuff running on Android, which means on your phone at some point! I have been amazed at how fast people are churning solid code out there.