Wolfenstein
Silas Warner, an American programmer and an employee of software company Muse Software, was a pioneer of early video game development, especially the stealth genre. He had access to computers in college, and when he worked for the IBM Mainframe architectures before joining Muse Software. The computer he used for game-development, P.L.A.T.O., was one of the firsts with multiple functioning terminals and an example of early computer networks. Warner developed, with P.L.A.T.O., a series of classic video games like his flight simulator and arcade shooter. Inspired by the arcade shooter video game "Berzerk" and the 1961 war film "Guns of Navarone", he developed "Castle Wolfenstein", a stealth-adventure video game in which the player controls an unnamed American prisoner of war as he steals German files containing secret war plans, while avoiding, disarming or at times killing hostile guards and trying to escape the fortified Nazi stronghold 'Castle Wolfenstein', set in World War II. The game was published in 1981 by Warner's company M.U.S.E. Inc. (Muse Software).
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).