nethack-x11 software package provides dungeon crawl game - X11 interface, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install nethack-x11
nethack-x11 is installed in your system.
Make ensure the nethack-x11 package were installed using the commands given below,
$ sudo dpkg-query -l | grep nethack-x11 *
You will get with nethack-x11 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Games |
| Package | nethack-x11 |
| Version | 3.4.3-14 |
| Description | dungeon crawl game - X11 interface |
| Sub Section | Games |