Recommended:

OS: Mac OS X 10.4.11, 10.5.6
Processor: PowerPC G5 or Intel
CPU Speed: 2.0 GHz
Memory: 1 GB
Hard Disk Space: 2.5 GB free disk space
Video Card: (ATI): Radeon 9600 Video Card (NVidia): GeForce FX 6600
Video Memory: (VRam): 128 MB or higher
Media Required: DVD-ROM Drive
Peripherals: Macintosh mouse and keyboard
Supported Video Cards: NVIDIA GeForce 6600, 6800, 7300, 7600, 7800, 8600, 8800, 9400, 9600, GEFORCE GT 120, GEFORCE QUADRO FX 4500 ATI Radeon 9600, 9650, 9700, 9800, X600, X800, X1600, X1900, HD 2400, 2600, 3870
NOTICE: Intel integrated video chipsets are not supported.
NOTICE: Apple original CPU’s only, CPU upgrades not supported
NOTICE: This game is not supported on volumes formatted as Mac OS Extended (Case Sensitive) REQUIRES THE FULL VERSION OF Civilization IV for Mac OS X TO PLAY

Civilization IV: Beyond the Sword screenshots