Slapjack Rules: How to Play, Variations and Jack Odds
Slapjack is a fast card game for 2 to 8 players where the only rule that really matters is: when a jack appears, slap it first. It is noisy, simple and great for children who already know War and want something with more action. Here are the rules, the common variations and some numbers on how often a jack shows up.
What You Need
- One standard 52-card deck, without jokers.
- 2 to 8 players around a table, all able to reach the middle.
How to Play
- Deal. Deal the whole deck face down, one card at a time. Players do not look at their cards; each keeps a neat face-down pile.
- Turn over. Starting left of the dealer, each player in turn takes the top card of their pile and turns it face up onto a central pile, turning it away from themselves so they do not see it first.
- Slap the jack. When a jack lands on the pile, everyone tries to slap it. The first hand directly on the jack wins the whole central pile and puts it face down under their own pile.
- Wrong slap. If you slap a card that is not a jack, you give one card from your pile, face down, to the player whose card you slapped.
- Out of cards. A player with no cards left can stay in by slapping the next jack. If they miss it, they are out.
- Winning. The player who ends up with all 52 cards wins. For a shorter game, stop after a set time and count the piles.
Common Variations
- Doubles and sandwiches: you may also slap two cards of the same rank in a row (a double), or the same rank with one card between (a sandwich). This turns Slapjack into something close to Egyptian Ratscrew.
- Quick slap rule: if two hands land together, the bottom hand wins.
- Speaking jacks: players must say "jack!" as they slap; this helps young children who hesitate.
- Gentle version: slap a cushion or say "snap" instead of hitting the pile, for small hands.
How Often Does a Jack Appear?
There are 4 jacks in 52 cards, so every card turned over has about a 1 in 13 chance of being a jack. In a freshly shuffled deck, the first jack turns up after about 10.6 cards on average. As more cards are turned, the chance that at least one jack has shown up grows quickly:
| Cards turned over | Chance at least one jack has appeared |
|---|---|
| 5 | 34% |
| 10 | 59% |
| 13 (a quarter of the deck) | 70% |
| 20 | 87% |
| 26 (half the deck) | 95% |
With the doubles rule added, about 3 cards in 51 match the card before, so a double appears roughly once every 17 cards. Added to the jacks (about one in 13), that nearly doubles the number of slaps, which is why the doubles version feels so much busier.
Is It Luck or Skill?
Who gets the jacks into the middle is pure luck. Who wins them is reaction speed and attention. Older children have an edge, so for mixed ages give younger players a small head start, such as letting them keep their hand flat on the table edge while others keep theirs in their lap.
Who Is It Good For?
Slapjack teaches card recognition and quick reactions, and it suits ages 5 and up. When children are ready for games with choices, move on to Crazy Eights or Old Maid. Before you deal, shuffle well and decide who deals fairly. For another fast grab game, try Spoons.
Where the Game Comes From
Slapjack is a traditional children’s card game, and its exact origin is not known. It belongs to the same family of slapping games as Snap and Egyptian Ratscrew.
FAQ
How do you play Slapjack?
Deal out the whole deck. Players take turns turning their top card onto a central pile. When a jack appears, the first player to slap it takes the pile. Whoever ends up with all the cards wins.
What happens if you slap the wrong card?
You give one card from your pile to the player who turned over the card you slapped.
Can you still play with no cards?
Yes. You stay in until the next jack. If you slap it first you are back in the game; if you miss it, you are out.
How often does a jack come up in Slapjack?
About once every 13 cards on average, and the first jack from a fresh deck comes after about 10.6 cards.
What is the difference between Slapjack and Egyptian Ratscrew?
Egyptian Ratscrew adds face-card challenges and more slap rules such as doubles and sandwiches. Slapjack keeps only the jack slap.