black-box software package provides Find the crystals, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install black-box
black-box is installed in your system.
Make ensure the black-box package were installed using the commands given below,
$ sudo dpkg-query -l | grep black-box *
You will get with black-box package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Games |
| Package | black-box |
| Version | 1.4.8-3 |
| Description | Find the crystals |
| Sub Section | Games |