NetHackCocoa 3.6.6 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is Bryce Cogswell.
The following version: 0.3 is the most frequently downloaded one by the program users. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. NetHackCocoa for Mac lies within Games, more precisely Tools. NetHackCocoa is developed for Mac OS X 10.5 or later.
From the developer:
NetHackCocoa is the classic NetHack game with a new interface written specifically for OS X. The main goal is a native app for Mac OS X that enables ergonomic and fast gameplay, with a choice of several tilesets in different sizes and ASCII, while sharing core UI and utility classes with the iPhone and iPad ports.
You may want to check out more Mac applications, such as WiiJunkies, Mansion Level Builder or TreasureChest, which might be similar to NetHackCocoa.