Based on Return to Castle Wolfenstein's engine, Enemy Territory started as an additional single-player campaign, but quickly evolved into a massive on-line shooter in minds of creators. The final product is a multiplayer-only, tactical and teamplay shooter. Pick your class (Soldier, medic, engineer, covert operations or field operations) and cover your teammates, heal them, build machinegun nests, bridges or deploy landmines, request airstrikes or artillery support, steal your enemy's uniform, and finally give your comrades ammo. In order to be successful, cooperative team playing is required.
Macchute has made a new version of this map. From the read me: It is, just like all materials and shaders I have made, under dwtfuw license, which means, that you are free to expand upon this concept. However you might need the .map file. Don't worry, just fire away a mail to macchute(at)gmail.com and you will get it with or without panda milk, whatever you prefer.
The Axis forces have built an anti-ship battery on the coast of Norway, the allies must destroy it in order to guarantee safe passage for all Allied shipping.