War

How to play War (the card game)

War is the simplest card game there is — and one of the most oddly satisfying. It uses an ordinary 52-card deck, split evenly between you and one opponent, and it needs exactly zero decisions from either player. You each flip your top card at the same time; whoever shows the higher rank scoops up both cards. When the two cards match, the tension spikes into a “war”: a burst of face-down cards and a single dramatic showdown that decides who takes the growing pile. Here you play against the computer, one flip at a time or on auto-play, until somebody holds all 52 cards. It is a game of pure chance, which makes it a perfect way to unwind.

The goal

The goal could not be simpler: win every card in the deck. You start with 26 cards and the computer starts with the other 26. Every round you both give up your top card to the table, and the round’s winner takes them away. Cards flow back and forth as the game goes on, and the game ends when one player has captured all 52 cards — or, if the match runs long, when the round limit decides it in favour of whoever holds more.

Setting up

A standard 52-card deck is shuffled and dealt into two face-down piles of 26 cards each — one for you, one for the computer. Neither player looks at their cards; you only ever see the card on top once it is flipped. Because the whole deck is hidden and shuffled by a fixed random seed, every deal is different and no planning is possible. Aces are high in War: an Ace is the strongest card, followed by King, Queen, Jack, then 10 down to 2. Suits do not matter at all — only the rank counts.

How a round works

• Each round, you and the computer simultaneously turn over the top card of your pile and place it in the middle. In this app you trigger the flip with the Flip button, or switch on Auto-play to let the rounds run by themselves.
• Compare the two face-up cards by rank alone. The higher card wins the round, and its owner takes both cards, adding them to the bottom of their pile.
• An Ace beats everything, and a 2 loses to everything except another 2. Suits are ignored, so the 9 of clubs and the 9 of hearts are an exact tie.
• Won cards always go to the bottom of the winner’s pile, so you keep drawing fresh cards from the top. This app uses a fixed, reproducible order: the two face-up cards first (yours then the computer’s), followed by any war cards in the order they were revealed.
• If the two flipped cards are equal in rank, nobody wins outright — instead the round becomes a “war”.

What is a “war”?

A war happens whenever both players flip the same rank. To settle it, each player places three cards face-down on the table and then one card face-up. The higher of the two new face-up cards wins the entire pile — the tied cards, the six face-down cards, and the two new cards, all at once. If those face-up cards are also equal, another war begins on top of the first, and this repeats for as long as the ties keep coming. The one catch: a war costs four cards (three down plus one up). If a player does not have four cards left to fight a war, they cannot continue and they lose the game on the spot. Wars are where the big swings happen — a single war can move ten, eighteen or more cards in one stroke.

Winning the game

You win the moment you are holding all 52 cards, because that leaves the computer with none. Most games end this way after a long tug-of-war. To make sure a game can never run forever — War can occasionally cycle without resolving — there is a limit of 1,000 rounds. If that limit is ever reached, the player holding more cards is declared the winner; in the astronomically rare case of an exact 26–26 split at the limit, the win goes to you. A win earns 30 ranking points.

A note on strategy (there isn’t any)

Let’s be completely honest: War is 100% luck. There are no choices to make, no cards to hold back, no bluffing and no skill. Once the deck is shuffled the entire outcome is already decided — every flip is forced, and both players simply reveal what fate dealt them. That is exactly why the game has a “Flip” and an “Auto-play” button instead of a hand to manage: there is nothing to decide, only to watch it unfold. Far from being a flaw, this is the whole charm. War is a calm, hypnotic, no-pressure game you can play with half your attention — perfect for winding down, and famously a favourite of young children learning their card ranks. If you want deep strategy, try our chess, checkers or Gomoku; if you want to switch your brain off and enjoy the swings of pure chance, War is exactly the right game.

Playing the computer

Because War involves no decisions, the “computer” is not really an opponent that thinks — it simply flips its cards exactly as the shuffle dictates, just as you do. For that reason there is only one difficulty (shown as “normal”) and there is no same-screen two-player mode: with both hands hidden and every move automatic, two people would just be watching the deck play itself. You can flip one round at a time to savour each war, or hit Auto-play and let the whole game resolve. Win and you earn 30 ranking points; sign in and your result is saved to the leaderboard. Everything runs on your device, so it works offline.

A little history

War is one of the oldest and most widespread children’s card games in the world, known under many names across Europe and beyond — for example “Bataille” in France and similar “top-card-wins” games in dozens of countries. It has no single inventor and no official rulebook, which is why small details (how many cards go face-down in a war, or what happens when someone runs out) differ from household to household. The version here uses the most common rules: three cards face-down before the deciding card, aces high, and running out during a war means you lose. It is often the very first card game people learn, precisely because it needs no reading, no counting and no strategy at all.

Frequently asked questions