freeciv-client-extras software package provides Civilization turn based strategy game (miscellaneous extras), 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 freeciv-client-extras
freeciv-client-extras is installed in your system.
Make ensure the freeciv-client-extras package were installed using the commands given below,
$ sudo dpkg-query -l | grep freeciv-client-extras *
You will get with freeciv-client-extras package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Games |
| Package | freeciv-client-extras |
| Version | 2.5.3-1 |
| Description | Civilization turn based strategy game (miscellaneous extras) |
| Sub Section | Games |