Underplayed Gems

FlipSum - A Puzzle By Claris Richter (2025)

FlipSum - A Puzzle By Claris Richter cover
Developer
TheDollarGameStore
Platforms
Windows
Genres
Casual, Free To Play
Rating
4.7 of 5, 19 player ratings
Typical playtime
about 42 minutes
Where to get it
Steam

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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 calm, methodical number puzzle where you flip and balance digits to match totals, feeling clear-headed and satisfyingly logical.

puzzlelogicbrain-teasercasualnumberdeductionrelaxingclever

What players say

Players describe FlipSum as a clean, minimalist logic puzzle akin to Sudoku with a number-flipping twist. Many praise its relaxing music and infinite puzzles, but consistently note missing quality-of-life features like an exit button and slow screen transitions.

Screenshots

FlipSum - A Puzzle By Claris Richter screenshot 1FlipSum - A Puzzle By Claris Richter screenshot 2FlipSum - A Puzzle By Claris Richter screenshot 3FlipSum - A Puzzle By Claris Richter screenshot 4FlipSum - A Puzzle By Claris Richter screenshot 5

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More by TheDollarGameStore

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.