When Civilization V launched a few years back, a lot of die-hard fans were disappointed with the lack of depth the game had to offer. The graphics were sharp, the interface was clean and intuitive, and the overall gameplay was very nice -- but it was missing some key mechanics introduced with expansions to Civilization IV. Brave New World, the latest expansion for Civ V, brings in a massive amount of depth to the game with simple mechanics used in brilliant ways.
The major revamp here is to the game's core culture system, with the culture victory being redone to incorporate new tourism points. Along with culture getting some love, there are also new archaeology sites, trade routes, an ideology system, and world congress that really change-up the end game.
Each of these new systems is simple to grasp, but they work with one another and existing mechanics in a way that really opens up fresh ways to play, making this the best version of Civilization.