The direct port of Spiderweb Software's last title in the Avernum saga, Avernum 6 (redubbed Avernum 6 HD), has recently been released for the iPad, for a mere $6.99, bringing users of the Apple device another Jeff Vogel isometric RPG after Avadon.
Here's the accompanying descriptive blurb:
Avernum 6 is an epic, indie fantasy role-playing adventure. It is optimized for the iPad and features an enormous world, a fascinating story, and 30+ hours of gameplay.
Travel into the strange subterranean land of Avernum, full of dungeons, labyrinths, and constant warfare. A set of disasters threatens to destroy your homeland in a spasm of famine and warfare. Only you can help your people to get to safety before everything falls apart.