Thermo Sudoku

503 reviews
Content rating
PEGI 3
10K+
Downloads
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About this game

Presented by Cracking The Cryptic, YouTube’s most popular Sudoku channel, comes a new game featuring one of the most popular puzzle types: Thermo Sudoku.

How does Thermo Sudoku work? Well each sudoku grid contains thermometer shapes (often drawn to create themes) and digits on thermometers must increase as one moves further from the bulb end. The interactions between the thermometers leads to new logical ideas and patterns that completely refreshes the standard sudoku solving experience.

As with their other games (‘Classic Sudoku’, ‘Sandwich Sudoku’ and ‘Chess Sudoku’), Simon Anthony and Mark Goodliffe (the hosts of Cracking The Cryptic) have personally crafted the hints for the puzzles. So you know that every puzzle has been play-tested by a human being to ensure that the sudoku is interesting and fun to solve.

In Cracking The Cryptic’s games, players start with zero stars and earn stars by solving puzzles. The more puzzles you solve, the more stars you earn and the more puzzles you get to play. Only the most dedicated (and cleverest) sudoku players will finish all the puzzles. Of course the difficulty is carefully calibrated to ensure lots of puzzles at every level (from easy through to extreme). Anyone familiar with their YouTube channel will know that Simon and Mark take pride in teaching viewers to be better solvers and, in these games, they always craft the puzzles with the mindset of trying to help solvers improve their skills.

Mark and Simon have both represented the UK many times at the World Sudoku Championship and you can find more of their puzzles (and lots of others) on the internet’s biggest sudoku channel Cracking The Cryptic.

Features:
100 beautiful puzzles
Hints crafted by Simon and Mark!
Handcrafted Thermo Sudoku puzzles by YouTube's most popular Sudoku channel!
Updated on
Dec 7, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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Ratings and reviews

471 reviews
Arfon James
June 30, 2020
Enjoying it, but when I get stumped, the hints are problematic more often than I would like. They refer to patterns I don't know being a novice (such as x-wing?). Also a couple of typos and logical failures which really should have been caught. Eg, a puzzle 38 hint references a column 9 thermo rows 1/2/4, when it only goes to 3, and the numbers given don't fit the 5/8 pair in the box below, which by the starting numbers and the middle thermo can only be there. I could be wrong, but it seems off.
9 people found this review helpful
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Tony T
December 8, 2024
Well, I had a much better time with this pack than with the chess sudoku one. There were only a few puzzles I got stuck on, but two of them were because they seemed to require you to see like a dozen moves ahead to see conflict. There was one time where there was a typo in a hint (mixing up row and colum in the clue).
1 person found this review helpful
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Steve Dobson
June 4, 2020
I would like to give this game more stars but I can't in all fairness. It uses Unity, a 3D games engine, for a non-3D game; that's over kill! It uses way too much battery. A 10 min game on my old (slow) tablet took 10% of battery life and lagged. Also the games doesn't sync across devices. Which I expected, given you are trying to get the fastest time for a limited number of boards. But misgivings aside I love the game, will probably buy others from the same stable, and yes, I do recommend it.
14 people found this review helpful
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