Equate 8 is an innovative and addicting new math puzzle game by the creator of The Devil's Calculator. Rearrange numbers in a 3x3 grid to solve eight equations (3 across, 3 down, and 2 diagonal) in the fewest moves possible. Challenges involve a variety of operators and difficulty levels!
Release Date:
Jun 17, 2025
Developer:
Publisher:
Teaser | NxtFest
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Reviews

“Simple, Smart Gameplay”
7 – moviesgamesandtech

About This Game

Equate 8 is a bold reimagining of the classic magic square—an innovative, addictive math puzzle featured at New York City’s Museum of Mathematics. Players rearrange numbers in a 3×3 grid to balance eight equations at once (three rows, three columns, two diagonals), racing to solve the puzzle in the fewest moves. With multiple operators, escalating difficulty levels, and medals awarded for efficiency, Equate 8 is as rewarding as it is challenging.

Equate 8 is the sequel to our Webby-nominated game The Devil’s Calculator, named one of PAX’s 10 Best Indie Games of 2019.

Disguised as a casual mobile game, Equate 8 is a powerful interactive learning tool. Our talk will explore the sophisticated math behind the project and debut a new feature allowing educators to design levels aligned with their curricula. With its blend of pedagogical depth, intuitive design, and playful challenge, Equate 8 shows how games can transform math education. It empowers students, supports teachers, and makes math feel like play.

Solving the grid in fewer moves will gain a silver or gold medal, but a bronze is awarded regardless, so don't stress. The daily puzzle gives players a free way to play and unlock content. Acquire “streaks” tokens by playing regularly. Exchange medals and streaks for Challenges, packs of themed puzzles. If the squares seem too complicated, open the menu to try Snap Mode. A number will automatically be locked (circled) when in the correct place. This mode can be played in a limited number of sequences before it reverts to the default. Donate to our nonprofit for access to unlimited difficulty levels.

Equate 8 is a fun casual game for all ages, whether practicing math skills or engaging brainpower. Donations support the mission of Cinq-Mars Media, a 501(c)(3) nonprofit to develop educational games, always provided free to teachers and students.

System Requirements

Windows
macOS
SteamOS + Linux
    Minimum:
    • OS: Windows 10 or later
    • Processor: 1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
    • Memory: 500 MB RAM
    • Graphics: Integrated Graphics
    • Storage: 150 MB available space
    • Sound Card: Any
    Minimum:
    • OS: El Captain or later
    • Processor: Apple M1 or later or 1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
    • Memory: 500 MB RAM
    • Graphics: Integrated Graphics
    • Storage: 150 MB available space
    Minimum:
    • OS: Ubuntu or Other Distro
    • Processor: 1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
    • Memory: 500 MB RAM
    • Graphics: Integrated Graphics
    • Storage: 150 MB available space

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