Progress Quest, the first of a new breed of "fire and forget" RPG's for Windows. The Info page has all the details, including backstory and a useful keyboard quick reference.

Since time before time the Vorlak had held the Crosshutch at Thraeskamp. The ancient reckoning held that the Five Skrelkampi (and their Truebine) would return when the great Trond-feast could be held anew and the Belnap reunited. But this legend became lost to all but the Papperboxen at Horbug. One of their own was Yallow the Speldrig, who found an unlikely pupil in Torbole Understeady, the discarded illigitimate waif of Wainthane Topknox, whom Yallow renamed Grumdrig and began to school as a boar-pulmet's apprentice. ...And, as it was said by some, in aberdoxy. ...

I haven't seen such a good example of geek humor in a long time. (Thanks usr/bin/girl.)