Added 1977-11-05 17:49:23
App Freshness



Lucy Zhang
Post Date:
2017-10-21 05:01:53

Download TwentyFour! »

An addictive new take on a classic math card game! The goal of the game is deceptively simple: make the number 24 using the four given numbers and basic arithmetic — addition, subtraction, multiplication and division.

For example, given the numbers 4, 7, 8, 8, one possible solution is: (7-8/8)*4. Some puzzles you’ll solve very quickly… but some are so devilishly difficult they’ll drive you batty!

Play this game for 15 minutes a day, and you will be amazed at how much your mental math speed and pattern recognition skills will improve after only a week or two. It’s a fun way to keep your mind sharp and your mental age young!

This game is also fantastic for students who want to improve their math skills, in the context of a challenging game. It also helps reinforce concepts such as order of operations and grouping.

Once you’ve practiced your skills in single-player mode, the real test is to challenge your friends in multi-player mode over Bluetooth. Experience the sheer terror of hearing your opponent frantically tapping out a solution and the unbounded joy of beating them to the answer by a tenth of a second!

For the truly competitive-minded, challenge yourself against the entire world by trying to make it onto the online leaderboard. Or for the more socially-minded, make it onto the multi-player leaderboard by playing matches against the most other players.

* Timed play – race against the clock!
* Free play – try to solve them all!
* Multiplayer – challenge a friend over Bluetooth!
* Online single- and multi-player high score lists
* All problems have solutions and solutions are available if needed.
* Elegant and easy to use interface
* High-quality graphics, animations and sound effects

If you’re already familiar with the classic game of Twenty Four, we think this app has far and away the best interface of any available today. We hope you’ll agree!


  • TwentyFour! Screenshot
  • TwentyFour! Screenshot

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  • david

    excellent game. get it, you won't regret it

  • k3v3n

    excellent game. get it, you won't regret it.

  • dylan99

    i love this game!! i can't stop playing it!

  • alan

    so simple, yet so fun.

  • h3l3n

    Sexy UI and fun game.

  • trev82

    i love this game. get it and you won't regret it

  • lance

    with so many crappy iphone apps out there, this one is a breath of fresh air. thanks for introducing me to a great game…

  • jz50

    the game is awesome. use to play this game as a kid and it's still fun today. highly recommend

  • michelle

    Found this game under Hot Games in the App Store. Really well done. Glad to see that they are featuring math games like this one.

  • TedB

    Great game for anyone who would like a change from sudoku. More people should know about this game.

  • Jill

    Just played the 2 player mode with a friend. worked great and was fun to race against someone.

  • brendan

    I think this game is a lot of fun and a good mental workout.

  • Coleszilla

    I've already had a minor fight with my girlfriend about my addiction to this game. If you like math and are competitive, this game is for you.

    We used to play this back in middle school with a deck of cards. Each of four players would turn over a card, and the first to find a solution would slap the table. If correct, you got the four cards. Incorrect solutions meant you had to give a card to each other player.

    This iphone version brings the game to the electronic world and gets it just right. Head on head play is fun, and for solo play the "speed play" setting is simply addictive.

    For the extreme nerd: some of the combinations are real stumpers. Back in the day, we thought we had a pretty exhaustive stumper list (e.g. 3 3 7 7, 4 4 10 10). But this version generates many more awesome combinations that have only one, very hard to find solution (e.g. 1 3 4 6, 1 6 6 8). Since the app only generates combinations that have a solution, when you try to solve a difficult combo you know you are not wasting your time. Ok, that last comment is debatable. 🙂

    • TapTapMath

      You must be the same Colezilla who has the highest score in the game. I've been playing this game nonstop trying to catch you. I love it and the online high scores list makes it even more addictive. And it's nice to be able to compete against other 24 fanatics.

      • Coleszilla

        And I take it you are oaz? Will be cool to play one on one once they put in a networking feature…

  • Vijay

    Great for learning arithmetic!

  • zeverva83

    The speed mode in this game is really addictive. I can't stop playing it! I keep going back b/c I think I can always spare 3 mins to play it, but I always ended up playing longer.

  • Ben Davenport

    Secret undocumented feature — if you and a friend start a speed game at the same time (within a second or 2), you should get an identical sequence of problems! This works as long as your iPhone clocks are in sync (they should be due to syncing with the network). So essentially this is an alternate way to play head to head, or among a group of many friends!

    • zr0stan

      great trip!

  • zr0stan

    This game's head-to-head version is pretty fun.

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