Two matching cards land, and the first to shout takes the pile.
The classic children's reaction game. Two cards of the same rank appear, and the first person to shout takes the pile.
A 52-card deck dealt out as evenly as possible, face down. Players do not look at their cards.
Going round the table, each player turns their top card face up onto their own pile in front of them, in a single motion away from themselves so everyone sees it at the same moment.
When the top cards of any two piles show the same rank, the first player to shout snap takes both piles and adds them to the bottom of their face-down stack.
Suits do not matter. Only the rank.
A player who turns over their last card carries on until the piles change hands. A player with nothing at all is out.
The last player still holding cards wins.
For a longer game, put the piles in the middle rather than giving them to the winner. When two top cards match, the shout is snap; when a card matches the top of the central snap pot, the shout is snap pot, and that player takes the pot.
Shouting snap when there is no match costs you a card, face up, to the middle. That penalty is what stops the game from being pure noise, and it should be enforced from the first round.