War

1 Overview

War is the purest card game of chance ever designed. Two players split a standard deck and simultaneously flip cards. Higher card wins both cards. Tie? That's a War -- more cards go face-down and another flip decides the winner. The game requires zero skill and zero strategy. It is perfect for young children learning card values, for passing time, or for settling disputes. The expected number of turns to resolve a game is roughly 262.

2 What You Need

• 1 standard 52-card deck (no jokers)

Find card decks for War on Amazon

3 Setup

1. Remove jokers. Shuffle the 52-card deck thoroughly.
2. Deal all cards face-down into two equal piles of 26 cards each. Each player takes one pile without looking at it.

4 How to Play

1. Both players simultaneously flip the top card of their pile face-up and place it in the center.
2. Compare the two cards. Card ranking from high to low: A, K, Q, J, 10, 9, 8, 7, 6, 5, 4, 3, 2. Suits do not matter.
3. The higher card wins. The winner takes both cards and adds them face-down to the bottom of their pile.
4. Repeat until one player has all 52 cards.

5 War Resolution (Ties)

When both players flip a card of the same rank, WAR is declared:

1. Each player places 3 cards face-down on top of their flipped card.
2. Each player then flips 1 card face-up. The higher face-up card wins ALL 10 cards (2 originals + 6 face-down + 2 new face-up).
3. If the face-up cards also tie, WAR continues. Each player places 3 more face-down and flips 1 more. This can chain repeatedly until one player wins.

6 Winning

The game ends when one player has collected all 52 cards. Alternatively, set a fixed number of rounds (e.g., 26 flips) and count cards at the end; more cards wins. The "collect all cards" ending can theoretically loop forever if cards cycle in a repeating pattern, though this is extremely rare with physical cards.

7 Game Length and Math

War is mathematically fascinating: once the deck is shuffled and dealt, the game plays itself with no decisions.

• Average game length: approximately 262 turns
• Probability of any given player winning from a random shuffle: 50%
• Ties occur on average in roughly 1 in 13 turns (4 of each rank in 52 cards)
• Probability of two consecutive tied ranks: about 1 in 169
• Some games can theoretically loop indefinitely if cards cycle in a repeating pattern -- this almost never happens in practice with physical cards but can occur in digital simulations

8 Variants

Two-Deck War

Use two shuffled decks (104 cards). Deal 52 each. More cards means more Wars and a longer game. Ties are more frequent with 8 cards of each rank instead of 4.

Speed War

Both players flip cards as fast as they want simultaneously. When a tie occurs, the first player to slap both cards starts the War. This adds a reflexes component and is significantly faster-paced.

Three-Player War

Deal 17 cards each from a 51-card deck (remove one random card). All three flip simultaneously. Highest card wins all three. On a tie among the top two, those two fight a War while the third player's card remains in the pot.

Ace-Low Variant

Aces count as low (below 2) rather than high. This makes 2 the highest card. Changes no strategic weight but alters the surprise of an Ace.

9 Is There Any Strategy?

No. Standard War is a zero-decision game. Every outcome is determined by the shuffle. You cannot influence which card you flip, where cards end up in your pile, or how Wars resolve.

The Speed variant adds a reflexes component. In other variants, peeking at your pile (if you know the order) would be cheating. War is a great teaching tool for children learning card ranks and a legitimate method for making random fair decisions between two people. It is not a game you win through skill.

10 Wrong House Rules

• "In a War, you only put 1 card face-down." Standard rules use 3 cards face-down. Using just 1 makes Wars much less impactful.
• "Aces are always low." In standard War, Aces are high -- the highest card. Aces-low is a valid variant but not the standard rule.
• "If you run out of cards during a War, you automatically win." Running out of cards during a War means you lose. You cannot complete the War resolution.
• "You can look at your pile and rearrange it." This fundamentally changes the game. Your pile is always face-down and you never reorder it in standard War.

11 History of War

The card game War is believed to have originated in France in the 18th century, known as "La Guerre" (The War). Simple flip-and-compare card games were popular across Europe as teaching tools for children and as quick games among soldiers and common people.

The game traveled to the United States with European immigrants and was documented in American card game rule books by the late 19th century. Its extreme simplicity made it ideal for children, and it became a standard first card game taught alongside Go Fish. Today War appears in dedicated children's card game editions, app form, and as a foundational game in early childhood education programs worldwide.

12 Frequently Asked Questions