...that are actually good. I've dabbled with a few, but despite loving the premise and somewhat enjoying the gameplay... I suck. So it stands to reason that Sword of Fargoal struck a chord with me (wish I'd picked it up sooner). I think there's at least one other casual roguelike on the iPhone, and one or two on the way, but if there's on on PC I could play with till then, that'd be awesome.
Rogue Touch and Cavern are two choices; I've heard really good things about Rogue Touch, might want to check that one out first. Neither of them look to be as simple as Sword of Fargoal is, but they're still a good deal simpler than iNetHack.
Er, how about our free 2003 PC remake of Sword of Fargoal? http://www.greatgamesexperiment.com/game/fargoal Also, check out POWDER, it's really good: http://www.zincland.com/powder/ Surprised that's not on the iPhone yet.
Sweet, Cavern looks pretty nice... I might get that. I'll get both of those Something tells me I might have played Powder before... if I did then I'm not sure why I stopped.