While now, itself considered old, Avernum shows indie ingenuity, technology and ideas of its time being applied as an old-meets-new factor to Isometric, turn-based RPGs before its time. The world-map movement and near-seamless switch to turn-based combat mode is satisfying without taking me out of one map or singular-world feel. The world is huge and fun to explore in a movement mode that acts like real-time, but does all the individual move-calculations behind the scenes. When in combat I can then seamlessly take control of each character, playing my turn-based combat.
The dialog and story are great, the world feels non-linear, and combat is fun. I recommend this game to anyone who wants their RPG itch scratched, but fans of almost any RPG variant may also love Avernum, especially turn-based-combat fans.