Urban Terror could best be described as a Hollywood tactical shooter; it is realism based to a certain extent (environments/weapons/player models), but also goes by the motto "fun over realism" (fast gameplay and lots of action).
This combination of reality and action results in a very unique, enjoyable and addictive game.
Urban Terror is available for Windows, Linux and Macintosh.
The current version of Urban Terror is 4.0. Currently working on 4.1.
Visit the game website here... http://www.urbanterror.net/news.php
Source: Entretenimiento Online