ioquake3 software package provides Game engine for 3D first person shooter games, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ioquake3
ioquake3 is installed in your system.
Make ensure the ioquake3 package were installed using the commands given below,
$ sudo dpkg-query -l | grep ioquake3 *
You will get with ioquake3 package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Games |
| Package | ioquake3 |
| Version | 1.36+u20140802+gca9eebb-2+b1 |
| Description | Game engine for 3D first person shooter games |
| Sub Section | Games |