Bonus Fact #1: Verdun employs a unique squad-based experience system. Since it's a co-op game, your XP is tied to the individuals you play with. Every time you play together, your shared XP goes up - even in a new play session. Think of it like forming friendships in the trenches.
Bonus Fact #2: Left to its own devices, Commander: The Great War will follow the course of history with other nations joining the Great War over time. But your actions can break the course of history so they join up sooner, later, or not at all.
Bonus Fact #3: Though it's called a "World" War, attention seldom gets paid to the WWI battlefields outside Western Europe. However, in To End All Wars, Africa and Asia are active, important forces that cannot be ignored.
Bonus Fact #4: The art style was inspired by comic books, which allowed the developers a more flexible tone with the story. At the beginning, Valient Hearts features bright colors, but as the war progresses the scenes litterally get darker.
Bonus Fact #5: The developers say this isn't only a flight sim, it's a new genre of "documentary game" that lets you experience and learn history first-hand. They're so accurate that the Russian Military Historical Society actually reached out to Rise of Flight to recreate Russian WWI planes.
Bonus Fact #6: Victoria II puts together a periodic in-game newspaper reporting on all the actions you've taken and events that affected your country. It even slants the coverage based on your governing ideology. How's that for immersion?
1916: Der Unbekannte Krieg has a unique premise, but it's not a humor game. It's horror meant to evoke the helpless terror of a soldier in the trenches, fighting in a war that made no sense against enemies that couldn't be harmed.