Focusing on the time periods after the invention of gunpowder. It will deliver 12 unique and challenging scenarios created by the development team at Firaxis as well as some esteemed members of the Civ Community. Civ IV: Beyond the Sword will also include ten new civilizations, sixteen new leaders, five new wonders, and a variety of new units that will offer even more fun and exciting ways for players to expand their civilization's power as they strive for world domination.
This is the same as the EXE file, just in ZIP format (for Mac users). For Windows users I recommend the EXE file, as it is much smaller.