(DISCLAIMER: Nethack has NOTHING to do with hacking, or the net.)
For those of you who do not know, roguelikes are a type of game like a dungeon crawl, but with one subtle change.
You will die. A lot.
Like, hundreds of times. Now, one might say, "That sounds like a total suck."
Well, that is not true. You see, once you finally beat the game, you feel like you really earned it.
Roguelike games have been around for a long time. Heck, Nethack came out in the 80's.
There are two major ones now, Nethack, that is very, very hard.
And, Dungeon crawl stone soup, which is slightly more user-friendly.
I think that you should download them, they're only a couple MB, free, and you will like them. No, I'm sure.
(I would post the links, but that might count as advertising a fourm, so just google the names or something.)