Sid Meier's Civilization V: Brave New World is an expansion pack that significantly enhances the base game with new features that deepen strategic gameplay. This expansion introduces international trade, cultural development, and diplomatic actions through the World Congress. Players can create Great Works and choose ideologies that influence their civilization’s standing in the global arena, making each decision critical as they navigate through different historical eras.

In addition to these new gameplay mechanics, Brave New World adds nine new civilizations, eight new wonders, and two new scenarios, enriching the overall experience. The expansion also includes four new gameplay systems and a multitude of new units, buildings, and improvements. This variety allows players to explore different strategies and approaches to empire building, ensuring high replayability and engagement.