war is a fun 2-4 player card game where players try to win all of the cards in the deck to play war you just need one standard deck of playing cards first all the cards are dealt between the players so everyone has the same number of cards each player keeps their cards face down in a pile in front of them then both players flip the top card on their pile face up on the table at the same time whoever has the highest card wins all of the cards and places them face down at the bottom of their pile in war aces are high if two or more players flip a card in the same rank they go to war each player in the war places the top three cards on their pile face down in front of them then flips a fourth card face up whoever has the highest face up card wins all of the cards on the table if both face up cards are the same rank a double war is triggered and each player places another three cards face down and flips a fourth card face up the player with the highest face up card in the double war wins all of the cards on the table if the face-up cards are identical again another war ensues and so on until one player wins the war play continues until one player manages to win all of the cards in the deck and win the game