Call of Duty 4: Modern Warfare differs from previous installments of the Call of Duty series. Previous Call of Duty games have a distinct three country-specific campaign style, while Call of Duty 4 has a more film-like plot with interlaced story lines from the perspectives of Sgt. Paul Jackson of the Marines 1st Force Recon and Sgt. 'Soap' MacTavish of the British 22nd SAS Regiment.
Requires a 64-bit processor and operating system
DirectX Version:Microsoft DirectX 9.0c (included)
Processor: Intel® Pentium® 4 2.4 Ghz / AMD(R) 64 (TM) 2800+ / Intel® and AMD® 1.8 Ghz Dual Core Processor or better supported
Memory:512MB RAM (Windows® XP), 768MB RAM (Vista®)
Graphics: NVIDIA Geforce 6600 or better or ATI Radeon® 9800Pro or better
Sound:100% DirectX 9.0c compatible sound card
Hard Drive: 8GB of free hard drive space
Internet: Broadband connection and service required for multiplayer connectivity