[Karacan]

Spiderweb published the Avernum series (formerly known as Exile), and Avernum III is a really, really good game that feels very open ended due to the huge world. The storyline is also pretty good, and the game gets fiendishly difficult but very interesting towards the end.

I also really like the "do as thou wilt" way of character development in Spiderweb rpgs, and the way that in battle, tactics are much more important than dicing luck, especially in dungeons and similar places.

However, the graphics are outdated and the interface takes some time to become second nature, but maybe that's just me.