A card game of epic proportions.

The basic rules:

You need an even number of players, greater than 4. The ideal amount is 8, but 6 or 10 will do. The players are randomly paired up and seated across from each other. Each player is dealt 4 cards, then 4 cards are dealt face up in the center of the players. On a signal from the dealer, the game starts, and the players take a card from the center and swap it for a card from their hand. There are no turns, this is done in a free-for-all format. The object is to have 4 of a kind in your hand. When this is achieved, the player must let their partner know, through a predetermined secret signal, that they have a winning hand. The partner, picking up on this signal yells "Grift," ending the hand and giving that team a point. If a Grift is incorrectly called, the hand ends and the offending team is docked a point. If at any time a player thinks that another player has four of a kind, either by watching their hand, picking up a signal, or just vibes, he yells "Swede." If he is correct, his team gets a point, if incorrect, his team loses a point.

That is Grift-Swede at it's most primitive.