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The Devil's CalculatorNewsLazy Chess DLC
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Lazy Chess DLC

The Devil's Calculator · published 12 Mar 2021, 22:21 UTC

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Well well well, what have we here? 😈 Lazy Chess created a DLC Level for it’s evil older sibling, The Devil’s Calculator 🔥 It’s a wickedly challenging crossover!

Use skills you gained in our new game Lazy Chess to noodle out a fiendish mathematical puzzle. Available now, free, in every copy of The Devil’s Calculator, our Webby-Nominated math puzzle game!

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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: