Postal 2: Apocalypse Weekend

Apocalypse Weekend is the single player expansion pack for the controversial first-person murder simulator, Postal 2. Unlike the original Postal 2, which was a free-roaming, exploration-based game similar to the Grand Theft Auto series, Apocalypse Weekend is a linear, mission-based game that takes the player from one pre-set level to the next. (mobygames.com)