To be fair, the Modern Warfare series is one big expansion for CoD4. But they did spend a ton of time creating and refining the single player campaign. Plus the Multiplayer is top dog for a reason, ITS REALLY FUN!. Its not perfect but really fun at times. Portal 2 Ran on the old Valve Engine which powered Half Life 2 and that game looks great.
MONITORS: Acer 1680*1050 LCD & TCL 24" LED 1080P CASE: Armor Jr PROCESSOR: AMD FX-8350 BOARD: Gigabyte 970A CARD: Sapphire HD6870 MEMORY: 16GB DDR3 Corsair Vengence PSU: Cooler Master eXtreme 600W INPUT DEVICES: Logitech G5 & Attack 3 Joystick, Wired 360 Controller, Saitek Eclipse OS: Win7 64bit STORAGE: 1.3TB Total HDD