Sorry but I just can't see the beauty in it. Most files are arbitrarily named, without an abstract or overview. Few functions have comments, variables names are inconsistent or abbreviated to obfuscation level. Most code seems printf hackery to account for singular-plural, male-female, human-monster variations of the messages shown to the player. Not particularly easy nor gratifying to read.

Go up a level.

Yeah, was going to post Nethack if no one else had. It’s so well written, I think even people who’ve never seen C before could understand what was going on.