I want to try this. Partially invented by John Nash, who won the Nobel prize in economics for game theory.

Boardgamegeek:

This game was devised in 1950 as a simple social game to model the behavior of people when forming coalitions. To make progress in the game you must form a coalition with at least one other player, but to actually win requires betraying your coalition. It is said that ‘The four authors still occasionally talk to each other’ and the initial tests of the game resulted in married couples going home from parties in separate cabs.

Original game title: Fuck Your Buddy