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The Devil's CalculatorNewsSummer Sale | LIVE Developer Play

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Summer Sale | LIVE Developer Play

The Devil's Calculator · published 26 Jun 2021, 23:03 UTC

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In celebration of the Steam Summer Sale, we're playing The Devil's Calculator and answering all of your questions live!

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Sale29 Sep 2025Steam Autumn SalePlay the award-winning challenge The Devil's Calculator ! Rather than the typical scenario of solving for x in an algebraic expression, imagine the operators themselves were unknown... In this challenging math game , an evil calculator has its normal arithmetic operators replaced with sadistically obscure functions. Using puzzle logic and a bit of algebra, you must work backwards to interpolate…Sale26 Jun 2025Steam Summer SaleThe Devil's Calculator provides a sophisticated, challenging indie puzzler for lovers of logic and brain teasers. You don't have to be a math whiz to succeed, but it might turn you into a numberphile after all! Play a demo and then buy at a Summer Sale special price! Also try our newest math puzzle, Equate 8! All proceeds from game sales benefit the mission of Cinq-Mars Media non-profit in deve…Sale19 Dec 2024Steam Winter SaleDuring the Steam Winter Sale, try Cinq-Mars Media's games and take advantage of the discounts! Also check out our newest game, CrossAbout, at 20% off. The Devil's Calculator as presented at the MoMath conference: