Return to Castle Wolfenstein
Return to Castle Wolfenstein: Enemy Territory (full install) – Wage war in team-based combat. Wolfenstein: Enemy Territory is an online multiplayer game, where the players interact with each other over a network in two teams (axis and allies) to defend or destroy mission objectives.
Download from: returntocastlewolfenstein.filefront.com
cd to the directory you downloaded et-installer.sh into
sudo sh et-installer.sh