Twenty-One Club

What is Twenty-One?

Twenty-One (also called blackjack) is one of the oldest card games around. The idea is simple: get a hand that adds up closer to 21 than the dealer's hand, without going over. In our version the dealer is called the host, and there are eight of them, from Mabel the cat at the Porch Table to Gus the bear, who runs the Grand Club.

There's no real money anywhere in Twenty-One Club. Chips are pretend and only exist to keep score, the same way you'd use matchsticks at a kitchen table. What we care about is the card game itself, and especially the decisions: when to take a card, when to stop, and when a pair is worth splitting. It's free, runs in the browser on a phone, tablet or computer, and there's nothing to download.

How to play 21

Each hand starts with a fixed stake taken from your chips. You get two cards face up. The host gets one card face up and one face down (the hole card). Then it's your turn.

Card values

A hand with an Ace counted as 11 is called a soft hand, because it can't bust on the next card (the Ace just drops to 1). Ace and 6 is soft 17. Once the Ace has to count as 1, the hand is hard. Our table shows both totals on a soft hand, like 7 / 17, so you never have to work it out.

Your choices

• Hit: take another card. Go over 21 and you bust, which loses the hand right away.
• Stand: keep the hand you have and let the host play.
• Double: on your first two cards, double your stake and take exactly one more card. Great when you're likely to get a strong total.
• Split: with two cards of the same rank, split them into two separate hands, each with its own stake. You can split up to four hands.

How the host plays

The host doesn't get to make choices. After you finish, the hole card flips over and the host keeps drawing until the total reaches 17 or more, then stops. That includes soft 17: our hosts stand on it. If the host goes over 21, every hand you still have in play wins.

Winning, losing and pushes

Beat the host's total and you win your stake back plus the same again. Lose and the stake is gone. If you tie, it's a push and you keep your chips. An Ace plus any 10, J, Q or K on your first two cards is a blackjack and pays 3 to 2, so a 10 chip stake comes back as 25.

House rules in our version

Every table plays 21 a little differently, so here's exactly how ours works.

• Cards come from a four-deck shoe, reshuffled when it runs out.
• The host stands on all 17s, soft 17 included.
• When the host shows an Ace or a 10-value card, they check for blackjack first. If they have it, the hand ends right there (a push if you also have blackjack).
• You can double after splitting.
• Split Aces get one card each and that's it. A 10 on a split Ace counts as 21, not blackjack.
• There's no insurance and no surrender. You don't choose your bet size either: each table has a set stake.

Controls (phone and computer)

On a phone or tablet, tap the big Hit, Stand, Double and Split buttons under the table. Tap the table or the Next hand button to deal again. On a computer you can click the same buttons or use the keyboard:

The coach and basic strategy

Basic strategy is the mathematically best play for every combination of your hand and the host's up card. It was worked out decades ago and it's the single biggest thing that separates a good 21 player from a guesser. Our coach knows it for our exact house rules.

After each hand the coach tells you whether your choices matched, and if one didn't, it explains why in a sentence, like "Always split 8s. 16 is a tough total." Tap the lightbulb (or press T) before a decision and the coach highlights the best button. A choice made after a tip doesn't count as a smart play, so use it to learn, then try without it.

Basic strategy in plain words

Here's the coach's playbook boiled down. The host's up card is what matters most.

When to split pairs

• Always split Aces and 8s.
• Never split 10s or 5s. Twenty is a great hand, and a pair of 5s is really a 10 you'd rather double.
• Split 2s, 3s and 7s against a host 2 to 7.
• Split 6s against 2 to 6.
• Split 4s only against 5 or 6.
• Split 9s against everything except 7, 10 and Ace.

If you can't double (say, you've already taken a third card), the coach hits instead, except on soft 18, where it stands.

Modes

Club Tables

The main path. There are eight tables, each with its own host, number of hands, stake and three goals. Every goal you meet is a star, and one star at a table opens the next. The tables are the Porch Table, Garden Shed, Treehouse, Boathouse, Rooftop, Lighthouse, Observatory and Grand Club. Early tables play 8 hands with 100 chips; the last ones play 12 hands with 250 chips and a 25 chip stake.

Goals are specific and varied: finish ahead, finish with 180 or more chips, win 3 hands in a row, win a doubled hand, split a pair, get a blackjack, watch the host bust twice, or make a set number of smart plays. The toughest one is Perfect coach, which means matching the coach on every choice in a session (with at least five choices). There are 24 stars in all, and your club rank climbs from New Member through Regular, Sharp Player, Table Captain and Club Star to Club Legend.

Quick Table

Ten hands, 100 chips, a 10 chip stake and a random host from the tables you've opened. Your score is your final chips plus 3 points for every smart play, so playing well counts even on a cold deck.

Daily Table

Same setup as Quick Table, but everyone in the world gets the same shuffled deck that day, and the host rotates daily. Because the cards are identical, it's a fair test of decisions. Play it each day to build a day streak, and compare scores on the leaderboard (signed-in players).

Pins and card backs

Pins are little badges for special moments. There are 12, including Natural (get a blackjack), Five Alive (win with 5 cards), Two for Two (win both split hands), Lucky Sevens (make 21 with three 7s), Soft Landing (win with 21 using an Ace and 3 or more cards), Coach's Pick (10 smart plays in a row), Comeback (finish ahead after dropping below half your chips) and Club Legend for all 24 stars.

Card backs are shared across every card game on our site. In Twenty-One Club you earn new ones for your first perfect coach session and as your star total passes 1, 6, 12, 18 and 24. Pick the one you like in Settings, along with the four-color deck if you prefer each suit in its own color.

Tips and strategy

• Think about the host's card first. A host showing 4, 5 or 6 busts a lot, so you can stand on stiff totals like 13 and let them take the risk. A 7 or higher means you usually need to improve.
• Don't fear hitting a soft hand. Soft 17 looks fine but it's weak. You can't bust it, so take the card (or double against 3 to 6).
• Double 11 almost always. It's one of the best spots in the game. Against everything but an Ace, push the extra chips in.
• Split 8s even when it feels bad. Sixteen is the worst total you can hold. Two hands starting from 8 are better than one hand stuck at 16.
• Chase goals, not just chips. On a table that wants a split or a doubled win, the coach will tell you when the right chance comes. Waiting for a correct spot keeps your Perfect coach star alive too.
• Use Quick Table to practice. Each smart play is worth 3 points there, so you get rewarded for good choices even when the cards go against you.
• Variance is real. You can play every hand perfectly and still finish behind. Over many hands, basic strategy wins more than anything else.

Questions