Wolfenstein
The "Wolfenstein" series of video games started with the 1981 stealth-adventure video game "Castle Wolfenstein". It was developed by American programmer Silas Warner, a pioneer in the early eras of video gaming, especially the stealth genre. It was published by his (then) company M.U.S.E. Inc. (Muse Software). The player controls an unnamed American prisoner of war as he steals war files containing information about secret German war plans while avoiding or sometimes killing guards, and tries to escape the fortified Nazi stronghold Castle Wolfenstein, set during World War II. The game is often credited as one of the first video games of the stealth genre, since it focuses more on avoiding or disarming enemies, and killing them is considered a last resort.
Wolfenstein: Enemy Territory
"Wolfenstein: Enemy Territory" is an online multiplayer game, wherein the players interact with each other over a network, in two teams (Allies and Axis) to defend or destroy mission objectives. The game is playable over the Internet or a Local Area Network. In public games, PunkBuster used to protect the game, however its developer, EvenBalance, discontinued support for the game in October 2011.
There are six officially released maps that are partially based on real locations or events (North African Campaign: Gold Rush, Siwa Oasis, and Atlantic Seawall Battery; Europe Campaign: Rail Gun, Würzburg Radar, and Fuel Dump), as well as hundreds of custom maps made by the gaming community. On most maps, the offense needs to complete a certain set of objectives within a limited amount of time. The defense needs to keep the offense from completing objectives until time runs out. Some objectives may be optional, and some objectives can be carried out by either team. These minor objectives assist the team completing them. Depending on game mode the action will continue on another map (Campaign Mode) or the same map (Objective Mode, Stopwatch Mode, Last Man Standing).