The basic idea is: 1492, 4 humans, 1 of them takes Muscovy, and the other 3 take weaker countries surrounding it, such as Teutonic Order, Crimea, and Sibir. The 3 weaker countries would not be required to cooperate against Muscovy, they could even fight among themselves if they wanted to. Post here if you're interested stating which country you'd prefer, and the times you are available for playing.