A simulation of the Seven Years' War. When France falls, Britain and Prussia win When Britain falls, France, Russia and Austria win Russia leaves the war on 5/5/1762. Spain joins France and Portugal joins Britain on the same day. Spain join the war in real life in January, but if they joined 4 months before Portugal then they'd have more than enough time to take over Portugal without them being able to defend themselves.
Since Prussia is quite small on the map, they usually fall within a few months which is quite unrealistic. Instead of immediately losing once their capital is taken, the enemy must hold Berlin for 60 days until Prussia falls.