The Devil's Calculator (2019)

Developer: Christopher Cinq-Mars Jarvis
Publisher: Cinq-Mars Media
Platforms: Windows, macOS, Linux
Genres: Casual, Indie, Strategy
Rating: 4.8 of 5, 122 player ratings
Typical playtime: about 1.9 hours
Where to get it: Steam

The 3D catalog: game boxes on wooden shelves, with the cat sitting at the counter next to its greeting.

The catalog in 3D

The same catalog has a room you can walk around in. The cat behind the counter is the AI Catbot, and they pick real games from it when you tell them what you feel like playing. Nothing is for sale, here or in there. Go in from here and this game is already out on the counter, with more like it waiting on the shelf next to it.

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How it feels

A quirky and satisfying logic puzzler that challenges you to reverse-engineer corrupted arithmetic functions in a lighthearted, cartoon-drawn setting.

puzzleexperimentaleducationalhand-drawncartoonycasualaddictive

What players say

Players praise it as a clever math puzzle for those who enjoy a challenge, with one noting the built-in calculator is awkward. It offers 68 main levels plus a DLC problem by 3Blue1Brown.

Screenshots

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More by Christopher Cinq-Mars Jarvis

This page is from Underplayed Gems, a catalog of older and overlooked games. Not quite it? You can browse by platform and genre, or take this one into the 3D catalog and ask the Catbot for something closer.