I’m a big board game fan, and my favorite these days is Imperial. Imperial looks superficially like the classic strategy-intense war game Diplomacy, but with a crucial difference: instead of playing a nation trying to win WWI, you play a banker trying to make money from that situation. If a nation you control (by having loaned it the most) is threatened by another nation, you might indeed fight a war, but you might instead just buy control of that nation. This is a great way to mute conflicts in a modern economy: have conflicting groups buy shares in each other.