Twisty

Play Zork, Infocom games, and hundreds of newer text adventures on this z-machine interpreter. Four games are built-in, but you can fetch more to your sd-card from http://ifdb.tads.org. Open source with known bugs: patches welcome!

Release 0.82: fixes 'save' command; users can now toggle soft-keyboard; new game included.

Source:

Google Play description (Android)