What is “nethack4” Package?

Patched, fork version of Nethack
For more details: http://nethack4.org

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install nethack4.

  brew install nethack4

Now, use nethack4!