(WW1 WWI First World War or the Great War) was a conflict between the Allies against Germany Austria Hungary Ottoman Empire etc.
War the had the loss of 7 million civilians dead as a result.
The war was ended by a peace treaty between America and Germany.
Trivia : There we're some bombs not active when the historians we're exploring one of the trenches of WWI.
World War 1 mostly took place in trenches.
There was never a video game about the first world war possible because of the weapons and vehicles weren't good back in the days of the 19th century.