Screenshots
Watch trailer on Steam ↗Equate 8
Christopher jarvis · Published by Cinq-Mars Media · Official site ↗
2 user reviews — 100% positive (2 reviews)
Last updated 28 Sept 2026
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!
£2.49
Lowest price we've ever recorded
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Price history
Indie, Casual · 2025 · More under £5 games
Navigate Equate 8’s cerebral maze by rearranging numbers to solve eight equations. Created by Christopher Jarvis, this casual yet addictive game tests your math skills across various difficulty levels.
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
Will my PC run this? →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
Supported Languages
Latest news
AnnouncementsOfficial
New Game Mode, New Features + Museum of Mathematics
We're super excited to roll out a major update of Equate 8 and share with all of you our talk at the Museum of Mathematics in NYC explaining the origins of the game and how magic squares relate to its puzzle mechanics. An all new game mode, Blitz, is available now where players start a run of rapid fire puzzles one move away from being solved. At every 10th level puzzles increase in difficulty requiring two moves, then three. The first run of each day is deterministic and the same for everyone so challenge friends and family for the highest score! It's super addictive and fun and is my new favorite way to play the game. We also have a new menu item called "generate" (available once 20 gold medals are unlocked) that lets players generate an exhaustive list of all possible puzzles given an elaborate list of criteria, perfect for teachers looking to cater puzzles to a particular curriculum. It's also interesting to see all the different possible permutations of this type of puzzle and gives you total control over customizing your own unique difficulties. We've also added keyboard shortcuts (qweasdzxc for the number grid along with numpad support), plus we've patched several bugs from the last version, which is still available in the "previous" branch. One bug impacted players' ability to retain streaks so please contact us at info@cinqmarsmedia.org if you lost a streak or faced some other bug and we can supply you with a code that can be redeemed in the new "recovery" menu that restores lost perks from the game. This can also be used to provide free, unlocked versions to students and educators according to our non-profit's mission. As always, thank you so much for your support and for playing!Read full article on Community Announcements (cinqmarsmedia)AnnouncementsOfficial
Equate 8 Is Participating in the Moonlight Madness Showcase!
Equate 8 was chosen for the Moonlight Madness Showcase!Moonlite Madness Showcase from NeverMore NicheTry the free demo of Equate 8 and check out the other Teasers & Trailers in the showcase this week!Read full article on Community Announcements (Mary Kate at CM Media)Community & EventsOfficial
Play a free demo of Equate 8 in Steam Next Fest
Equate 8 is an innovative and addictive math puzzle game. Your mission: rearrange numbers in a 3x3 grid to solve 8 equations simultaneously – 3 across, 3 down, and 2 diagonally. Complete each puzzle in the fewest moves possible to earn medals and unlock new content! Free demo now available!Read full article on Community Announcements (Mary Kate at CM Media)
