I am new to os x. I have mac os 10.1.5. I went to Nethack.org and found two versions (I downloaded both in case one didn't work). They are versions 3.4.3 (tiles) and 3.4.2 (tiles). I unzipped both of them, and I got a folder called nethack. Inside of it are two more folders containing lots of other folders and files; I looked through all of them and can't find an app! Did I miss something?