Make 21 across and down

Blackjack on a 3×3 grid. Every row and column is a hand, and every card counts twice.

Download

Free on iPhone. No ads, no timers.

Try it · 1 of 4

Make 21

Face cards count 10, and aces 1 or 11. Where does the ace make 21?

Your card

A new deck every day

The same 52 cards for everyone, and one attempt. Match the expert's par for three stars and keep your streak going.

Every card counts twice

Hit 21 and the line clears. Go over and it freezes.

Share the run, not the deck

Your run as a strip of squares, card by card, with no spoilers.

24 hand-built puzzles

A set board, a short deal, and one goal. Each one teaches a deeper move, and every one has a solution.

Five ways to play

Classic and Endless, where the decks keep coming, plus a quick 26-card Sprint, Hard, and Iron with no discards and no undos. Try each one free.

Watch your game grow

Best scores, longest chains, your daily history, and a run review that finds the move that cost you most.

See it play

  1. A card puzzle

    Make 21 across and down

    Each card lands in a row and a column. Hit 21 and the line clears.

  2. The cross

    One card. Two 21s.

    Finish a row and a column with the same card, and both pay double.

  3. The chain

    Clear in a row, score more

    Every clear without a bust raises your chain and multiplies your score.

  4. Your run

    Finish the deck, share the run

    All 52 cards placed, then your run as a strip of squares.

Calm by design

No ads, no timers

No energy, lives, or coins. Nothing to buy inside a run, ever.

Plays offline

The daily and free play need no connection, in light or dark.

Learn in a minute

Five short interactive lessons, played by the real rules.

Challenge a friend

Play any deck by its code, or send your cards and score to beat.

Game Center

Daily and best-score leaderboards, plus achievements.

Today's Grid widget

Today's grid and your streak, right on your Home Screen.

Free to play. Plus for the full game.

Free

The daily and the heart of the game.

  • Today's grid, with streaks, leaderboards, and sharing
  • Classic free play, as often as you like
  • Play any deck by its code, or challenge a friend
  • Five lessons and the first puzzle chapter
  • Stats, achievements, and the Today's Grid widget

Grid 21 Plus

Everything in Free, and the rest of the game.

  • Endless, Sprint, Hard, and Iron, each free to try once
  • Every past daily grid, to play or replay
  • Every puzzle chapter
  • The Felt table, card designs, and app icons

One purchase, yours for good, with Family Sharing. Plus never changes a run: the daily is the same for everyone.

Every past grid

Play or replay any daily you missed, plus every puzzle chapter.

The Felt table

Green baize and brass, in light and dark.

Card designs

Extra faces, backs, and app icons.

Questions

Is Grid 21 gambling?

No. There's no betting, and nothing to win or buy inside a game. Blackjack only supplies the arithmetic: face cards are 10, aces are 1 or 11, and 21 is the goal.

What can I play for free?

Today's grid every day, Classic free play, the lessons, and the first puzzle chapter, with no ads and no time limits. You can also play Endless, Sprint, Hard, and Iron once each before deciding on Plus.

How does Grid 21 Plus work?

It's a single in-app purchase, not a subscription, and it unlocks the full game for good. Family Sharing is included, and you can restore it from Settings on any of your devices.

Is the daily grid the same for everyone?

Yes. Everyone plays the same 52 cards each day, and Plus doesn't change that. Your score goes on the Game Center leaderboard, and you can share your run without spoiling the deck.

Does it work offline?

Yes. The daily grid and free play work without a connection. Game Center and buying Plus need one.

What do I need to play?

An iPhone running iOS 27 or later.

Today's grid is waiting

The same 52 cards for everyone. Free on iPhone.

Download