If Shiren the Wanderer's turn-based system was too slow-paced to satisfy your dungeon crawling needs, you might want to look into Dungeon Explorer: Warriors of Ancient Arts, Hudson's Diablo-esque hack-and-slash follow-up to the original TurboGrafx-16 game. Amazon has Dungeon Explorer discounted to $19.49, a generous price considering the game includes online support for up to four players and even a bit of voice chat.
And if you're neither a fan of dungeon crawling or dungeon exploring -- perhaps you just want to steer clear of dungeons altogether -- Amazon also has LifeSigns: Surgical Unit marked down to $19.49. While the LifeSigns series isn't as popular as that other surgery sim, Trauma Center, apparently a few of our readers are big fans of the game!
Read - Dungeon Explorer: Warrior of Ancient Arts
Read - Lifesigns Surgical Unit