A free blackjack game to practise against the dealer

Twenty-One is the blackjack-style card game in Games by Zaweba, and you can practise it for free. You take on the dealer with a stack of 500 chips and try to get closer to 21 than they do without going over. The chips exist only in the game, it runs offline, and there are no adverts or accounts.

Blackjack is a game of small, repeated decisions: hit or stand, double or not, split or keep. Practising them where nothing real is at stake is the best way to see how each one plays out.

How Twenty-One plays

Place a bet with your chips, then take your cards. Picture cards count 10 and an ace counts 1 or 11, whichever suits the hand. Hit for another card or stand on what you have. You can double your bet and take exactly one more card, or split a pair into two separate hands.

The dealer draws to 17. Beat the dealer's total to win evens, and a two-card twenty-one pays 3 to 2. Cash out whenever you like.

You can play with the mouse, clicking chips and buttons, or with the keys: H to hit, S to stand, D to double, P to split and Enter to deal. Twenty-One is on the Cards shelf of Games by Zaweba.

Decisions worth practising

Know what the dealer has to do. Because the dealer draws to 17, they will keep taking cards on a low total. That fact underlies most sensible play, since a dealer showing a weak card has a fair chance of going over.

Count aces carefully. A hand with an ace that can still be 11 is called soft, and it can take another card without the risk of busting, because the ace drops to 1 if needed. That's a good moment to be bolder.

Double when you're in a strong spot. Doubling means one card only, so it suits hands where one good card leaves you in great shape.

Split thoughtfully. Splitting a pair gives you two hands and two bets. Try it with different pairs and see how the results compare over several rounds.

Watch the chips as well as the cards. Starting with 500 and seeing how fast a run of big bets can empty the stack is a useful lesson in itself.

Practice without risk

Twenty-One plays with chips that never leave the game. Everything in Games by Zaweba runs on your own PC, from the cards to the sounds, and nothing connects to the internet. Your best score, plays and wins are kept in a file in your settings folder, and the result card at the end shows your score alongside your best.

That makes it a relaxed way to learn the rules and get a feel for the decisions, whether you're new to the game or just like a few hands now and then.

Nearby on the Cards shelf

Five Card Draw is a jacks-or-better video poker machine, also played with credits rather than money. Higher or Lower is a gameshow-style ladder of guesses where knowing when to bank is everything. If you'd rather play cards with skill against opponents, try Broken Hearts against three computer players or Knock Rummy against one. Press Esc to pause any of them, and F1 explains the rules whenever you need a reminder.