War is simple by design, but that simplicity has inspired dozens of creative variants over the years. Some add skill and reflexes, others add betting and casino mechanics, and some just speed up the game. This guide covers the most popular and interesting War variants with full rules for each.

Egyptian Ratscrew (ERS)

Egyptian Ratscrew is the most popular War variant and adds a significant skill element through slapping mechanics. It’s a favorite at sleepovers, camps, and college dorms.

Players

2 to 6 players. Best with 3-5.

Setup

Deal the entire deck as evenly as possible. Players keep their cards in a face-down pile without looking at them.

Basic Play

Players take turns placing their top card face-up onto a central pile. When a face card or Ace is played, the next player must play a certain number of cards to “beat” it:

Card Played Cards the Next Player Must Play
Ace 4 cards
King 3 cards
Queen 2 cards
Jack 1 card

If the next player plays a face card or Ace within their allotted cards, the challenge passes to the player after them. If they fail to play a face card within the required number of cards, the player who played the original face card wins the entire pile.

Slapping Rules

Any player can slap the pile to win all the cards when certain combinations appear on top:

  • Doubles — Two cards of the same rank in a row (e.g., 7-7)
  • Sandwich — Two cards of the same rank with one card between them (e.g., 5-9-5)
  • Top-bottom — The top card matches the bottom card of the pile
  • Tens — Two consecutive cards that add up to 10 (e.g., 6-4, 3-7)

The first player to slap correctly wins the pile. If you slap incorrectly (a “bad slap”), you must add a penalty card to the bottom of the pile.

Winning

The last player with cards wins. Players who run out re-enter by slapping back in.

Slap Jack

Slap Jack is a simpler slapping game, ideal for younger children who aren’t ready for Egyptian Ratscrew’s complexity.

Players

2 to 8 players.

Setup

Deal the entire deck as evenly as possible.

How to Play

  1. Players take turns placing their top card face-up on a central pile.
  2. When a Jack appears, all players try to slap the pile.
  3. The first player to slap the Jack wins the entire pile.
  4. If you slap when the card is not a Jack, you give one card to the player who played that card as a penalty.

Winning

The player who collects all the cards wins. A player who runs out of cards gets one chance to slap back in on the next Jack.

Why Kids Love It

Slap Jack requires only one rule to remember (slap on Jacks) and adds physical coordination and reaction speed to the basic War formula.

Casino War

Casino War translates the childhood game into a casino table game with real-money betting. It’s one of the simplest games on the casino floor.

Setup

Played with six standard 52-card decks shuffled together. One player vs. one dealer.

How to Play

  1. The player places an Ante bet.
  2. Both player and dealer receive one card face-up.
  3. Higher card wins. If the player wins, the Ante pays even money (1:1).
  4. If the dealer wins, the player loses the Ante.
  5. On a tie, the player chooses:
    • Surrender — Lose half the Ante.
    • Go to War — Place an additional bet equal to the Ante. Three cards are burned, then both player and dealer receive a new card. If the player wins or ties, the Ante pays even money (the war bet pushes). If the dealer wins, the player loses both bets.

House Edge

The house edge on Casino War is approximately 2.88% on the Ante bet. Surrendering on ties increases the house edge to about 3.70%. Always going to war is the mathematically optimal strategy.

For a deep dive, see our full Casino War guide.

Speed War

Speed War removes the simultaneous flip and turns War into a race of reflexes.

Players

2 players.

Setup

Deal 26 cards to each player, face-down.

How to Play

  1. Both players flip cards onto a shared central area as fast as they can — there are no turns.
  2. When two cards of the same rank appear at the same time, both players race to slap the pile.
  3. The first player to slap wins all face-up cards.
  4. Play continues until one player has all the cards.

Tips

  • Speed War is chaotic and physical. Play on a surface that can handle enthusiastic slapping.
  • Agree beforehand what counts as “first slap” — the hand on the bottom of the pile typically wins.
  • Some versions require simultaneous flipping to specific central spots rather than a shared pile.

Three-Player War

Standard War adapts easily to three players with minor dealing adjustments.

Setup

  • Deal 17 cards to two players and 18 to the third (or deal 17 each and set the remaining card aside).
  • Each player keeps a face-down pile.

How to Play

  1. All three players flip simultaneously.
  2. The highest card wins all three cards.
  3. If two players tie for the highest card, those two players go to war (the third player’s card is included in the winnings for the war victor).
  4. If all three players tie, all three go to war simultaneously.

Winning

The last player with cards wins. Three-player games tend to be shorter than two-player games because one player often gets eliminated relatively quickly, and the remaining two-player game usually has an uneven card distribution.

For more on multiplayer rules, see our Multiplayer War guide.

Four-Player War

Setup

Deal 13 cards to each of the four players.

How to Play

Same as three-player War — all four flip simultaneously, highest wins all four cards. Ties between the top players trigger a war involving all tied players, with all other players’ cards included in the pot.

Elimination

Players who run out of cards are eliminated. The game continues until one player has all 52 cards.

Comparison Table

Variant Players Skill Required Speed Best For
Standard War 2 None Slow Youngest children
Egyptian Ratscrew 2-6 High (reflexes) Fast Teens, adults
Slap Jack 2-8 Medium (reflexes) Fast Young children
Casino War 2 (vs. dealer) None Fast Casino players
Speed War 2 Medium (speed) Very fast Competitive players
Three-Player War 3 None Medium Groups of 3
Four-Player War 4 None Medium-fast Groups of 4

Which Variant Should You Try?

  • Playing with kids under 6? Stick with standard War or Slap Jack.
  • Playing with older kids or teens? Egyptian Ratscrew is the most popular choice.
  • Looking for a quick game? Speed War or our Quick Variants guide has options.
  • At a casino? Casino War is straightforward and has a relatively low house edge.
  • Three or four players? Multiplayer War works well — see our Multiplayer War guide.

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