As opposed to earlier games in the Call of Duty series, the game features modern equipment and new features, many exclusive to the multiplayer part of the game, such as "killstreaks"; killing a number of enemies without the player dying in between kills allows access to various assets including airstrikes and helicopter support. A character can be positioned in one of three stances: standing, crouching, or prone, each affecting the character's rate of movement, accuracy, and stealth. Using cover helps the player avoid enemy fire or recover health after taking significant damage. As such, there are no armor or health power ups. When the character has taken damage, the edges of the screen glow red and the character's heartbeat increases. If the character stays out of fire, the character can recover. When the character is within the blast radius of a live grenade, a marker indicates the direction of the grenade, helping the player to either flee or toss it back to the enemy.
System Requirements
CPU: Pentium 4 2.4 GHz/ Athlon 64 2800+ (Intel & Athlon 1.8 GHz Dual Core or better supported)
CPU Speed: Pentium 4 2.4 GHz/ Athlon 64 2800+ (Intel & Athlon 1.8 GHz Dual Core or better supported)
RAM: 512 MB (768 MB for Windows Vista)
OS: Windows XP/Vista
Video Card: 128MB 3d Hardware Accelerated card required-100% DirectX 9.0c compatible and latest drivers (NVIDIA GeForce 6600+ / ATI Radeon 9800 Pro+)
DirectX version: 9.0c
Sound Card: Yes
Free Disk Space: 8 GB of uncompressed free hard disk space (plus 600 MB for Windows swap file)
DVD-ROM: 6X DVD-ROM
