BATTLE JACK 21

Battle Jack 21 is a free online card game that turns blackjack into a duel. Instead of playing against a dealer for chips, you fight an opponent: the cards you draw add up to your attack, and the closer you get to 21, the harder you hit.

How to play Battle Jack 21

1. Pick your first champion from the face-down cards on the start screen.
2. Press Play to start a battle.
3. Draw new cards to raise your total towards 21.
4. Attack with the total you have. A total of exactly 21 wins the battle at once.
5. If your total goes over 21, your attack does no damage that turn.

Game features

• Blackjack rules used as a battle system: every draw is a risk
• Champion cards to collect; open the Cards screen to see them
• Your best result is kept on the start screen
• Upright layout that fits a phone and also runs on a computer
• No download and no sign-up

Tips

• Count before you draw. With 17 or more on the table, most cards in the deck will push you past 21.
• A safe medium hit is better than a bust. An attack of 18 does damage; an attack of 23 does none.
• Draw freely while your total is 10 or less. No single card can take you over 21 from there.

Frequently asked questions

Is it free to play?

Yes. It runs in your browser on Yes This Game with nothing to download and no sign-up.