Victoria 2 is the most conceptually brilliant Paradox game, but it's also probably the most arcane. It's not a difficult game to learn, but a lot of frustrating things can occur without any explicable reason - factories closing, revenue falling precipitously, rebels organizing in your country - unless you take the time to understand the game's economic and population systems. Victoria 2 also suffers from an opaque interface which is more emblematic of the older Paradox titles than the newer ones. However, if you can get beyond the lack of transparency, Victoria 2 is still a great game, particularly if you have some affinity for the time period or want a game of economic and political depth. A House Divided and Heart of Darkness are both essential expansions; Victoria 2 has made enormous strides since its release and the two expansions are a large reason for it.