

FlipSum - A Puzzle By Claris Richter
TheDollarGameStore · 2025 · Casual, Logic, Puzzle, Relaxing, 2D
PC
This game is free to play. Get it on Steam →
Screenshots
About FlipSum - A Puzzle By Claris Richter
FlipSum is a bold new twist on classic number puzzles! Inspired by sudoku, this brain-teasing series challenges you to flip, cancel, and balance numbers on a grid to match the target totals. It’s a thrilling game of logic, deduction, and number play—perfect for puzzle lovers who crave something fresh and clever. Get ready to see numbers in a whole new light!How To Play:Mark numbers as positive, negative, or cancel them out. Only one number may be cancelled per row / column. Can you balance the entire grid so that each column / row adds up to the correct number?Features:
- 4 Difficulty Levels
- Infinite Puzzles
- Level Counter Per Difficulty
- Track Your Total Points To Show Off To Your Friends!
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
A simple yet extremely satisfying logic and deduction game with relaxing music is a like a gentle massage for the brain:)) Other than the ( exit game button ) it would have been fun to be able to compare your progress with the other players and see who is the current world champion especially that the game has infinite puzzles ! The one page rules should be simple to translate to other languages and get the game more fans around the world.2 found this helpful
Needs 'Exit Game' button. And oh, infinite puzzles, ooooh.2 found this helpful
“FlipSum feels like Sudoku’s clever cousin who decided to wear a hoodie and speak only in numbers. You’ve got a grid full of digits and your job is to decide: flip them positive, negative, or cancel one in each row/column, simple rules, but the logic hooks you deep. The minimalist look and relaxed pace make it perfect when you wanna unwind but still feel sharp. On the flip side, after a while the puzzles can blur into each other because the core mechanic stays pretty constant. If you’re up for a chilled-brain workout, this one nails it. 『無限の数字の中に、ひらめきは一瞬だけ光る。』1 found this helpful
This is a nice game, but poorly implemented. With additionnal QoL features, this could easily be sold 5 to 10 euros/dollars. Pro: [list] [*] rules are simples [*] difficulty seems well targeted [*] this is a nice puzzle format overall [/list] Cons: [list] [*] screens are embarrasingly slow to load (4 to 5 seconds), each time you go from one puzzle to another, or when loading the title screen [*] there is a severe lack of quality of life ; I would recommand to implement the following: [list] [*] Very important: [list] [*] a 'quit game' button [*] being able to switch puzzle, or even better, to pick a puzzle number, or among a list of same difficulty puzzles (being stuck on one puzzle, and not being able to pass it is very frustrating) [*] an undo/redo option (with keyboard) [/list] [*] Somewhat important: [list] [*] adding more colors/types to color cells, to help with reflexion. I know it would break the ease with which one can use the mouse to color, but it could be only with left click, after choosing among a list of colors [*] adding free notes (with mouse drawing for example) [/list] [*] Minor: [list] …
This was actually fun to play. The soothing music while playing does not intrude at all and the puzzles make you think, especially after you THINK you have the correct solution and then you see something you missed and have to backtrack and fix it. Fun distraction and gets the brain cells working. Going to be awhile before I even attempt sensei mode.....
We're doing METH, baby!
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