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Products that do what Sumstone - Mental Math Puzzle Game does

Think fast, crunch numbers - inspired by Countdown

  1. 1IM

    This is the first iteration of a short game I’m making that tries to interactively explain some of my favorite math questions / ideas. My goal is mostly to get the player curious and not necessarily to explain absolutely everything. There were a lot of fun technical parts to building this: - For implementation reasons, it’s much easier if the lines all have integer intersection points with each other. To do this, when a new line is added I “cheat” by rounding intersections to integers and then splitting the old lines at the intersection into new linds (with potentially different slopes)…

    2024 · rahulilango.com

  2. 2IM

    I made this game for my children to play, as they are heavily into Wordle, and I thought they'd also like something maths based! Every puzzle is solvable and has at least one solution (usually more). There is a kids mode in the settings, plus a hard mode for extra difficulty.

    2022 · summle.net

  3. 3C
    Countle152

    Countle is a daily puzzle game, a la Wordle, where you use 6 given numbers to produce of a sequence of calculations to reach a target number. In other words, it's a daily round of the "Numbers Game" from the British game show Countdown. Sample numbers round: https://www.youtube.com/watch?v=pfa3MHLLSWI A new puzzle appears every day!

    2022 · countle.org

  4. 4IM

    Hey there! I'm the brains behind the math crossword game on my site. This game is all about making math a little more fun – users just drag and drop numbers to fill in the blanks and move on to the next level if they get it right. Let me know if face any issues or have any suggestions! :)

    2024 · scientific.place

  5. 5IM

    Hey, maker here. After launching a daily word search game, I randomly thought of this math game while driving. Finally got around to making it and I think it turned out pretty cool. It’s a math search game that’s meant to help you practice your quick addition, subtraction, multiplication, and division skills. I’m hoping it’ll help people (even those like me who aren’t big on math) learn and increase their speeds. (There are also some settings you can enable to make the game harder) If you try it out, please let me know if you found it fun, if you have anything you’d like me to add, or if you…

    2024 · worchle.com

  6. 6AD
  7. 7

    Rock-paper-scissors challenge

    2024

  8. 8SA
  9. 9IM

    I've been playing with this for quite some time and I think it's finally ready for public consumption. All feedback welcome.

    2025 · madmonk13.github.io

  10. 10DA

    Hello HN! We're Rory and Chris, and we've made a game called Dozenal[0], a grid-based number puzzle game where the objective is to use all the tiles on the board to create totals of 12 (hence the name). We think the mechanic is quite unique, although keen to hear if people know of similar games! You essentially drag tiles across the board, and the distance between two numbers decides the arithmetic operation when they connect to each other: zero spaces is addition, one space is subtraction, two spaces is multiplication: e.g. 5 → 4 = 9 5 → _ → 4 = 1 5 → _ → _ → 4 = 20 We've spent the past…

    Jul 2026 · dozenal.game

  11. 11IM
  12. 12

    Like a tiny game of Scrabble, generated each day

    2022

  13. 13DF

    Domino fit is a domino tiling puzzler I spent a lot of time both making and playing. Its like sudoku but with a geometric angle, the sum of the dots must match the row and column numbers. It's running on Betsy, the server under my couch, and was made with typescript. I'm proud of it. I hope you give it a shot, and appreciate any thoughts or criticisms!

    2024 · dominofit.isotropic.us

  14. 14TL

    I’ve been building a few small games to help kids (and curious adults) build reasoning and logic skills. Think Word Ladder, Prime Hunter, Math Maze ,all in the browser, no installs. Would love feedback or suggestions for new types of puzzles

    2025 · quizmathgenius.com

  15. 15
    numble73

    Daily number challenge

    2022

  16. 16
    #crunch77

    A simple but addictive number sorting game

    2018

  17. 17
    Sum 2.073

    How fast can you add?

    2019

  18. 18

    A daily numbers puzzle, scored like golf

    Jul 2026 · parithmetic.com

  19. 19

    Four Numbers, One Solution

    Jan 2026

  20. 20SM

    Please let us know what you think. We would be so so grateful for feedback from the community. Thank you in advance!

    2023 · mindlygames.com

  21. 21AM

    2022 · mathgrams.com

  22. 22

    Addictive word puzzle game

    2022

  23. 23
    Numble3

    Wordle for numbers, with hot-and-cold feedback

    24d ago · numble.today

  24. 24MW

    Hey HN check this really cool worlde-inspired project of a friend of mine. :)

    2022 · mathle.bykiru.rocks

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