Grid of Thermometers from Frozax Games is a clean, satisfying visual logic puzzle built entirely around deduction and elimination. Based on the classic Thermometer puzzles that first appeared in puzzle magazines in the early 2000s, each grid presents a set of thermometers arranged horizontally and vertically. The numbers outside the grid indicate how many cells must be filled in each row or column, and every thermometer fills from its circular base toward the tip. You can fill a thermometer partially or completely, and the controls are simple: left‑click to fill a cell, right‑click to mark it empty, or select a clue number to automatically mark the remaining cells once that row or column is complete.
The game offers a generous range of difficulties, from approachable 4×4 boards to demanding 14×14 layouts. The 15 Classic Packs include 1,500 handcrafted puzzles, and if that somehow isn’t enough, the game adds sixty new procedurally generated levels every day in three different sizes. Some puzzles feature a lightning‑bolt icon, signaling that certain clue numbers are missing. Even then, there’s no guessing. Every puzzle is fully solvable through logic alone, which makes each completed grid rewarding.
Quality‑of‑life features are strong across the board. Each puzzle includes Hint, Undo, and Restart options, and you can save your progress at any time and return to it later. After finishing a puzzle, you’ll see a breakdown of your performance, including how many hints you used, the time you spent solving it, and how many restarts were necessary.
It’s you dislike trial‑and‑error, than this one's for you. No guessing, just careful reasoning that feels rewarding after you solve it. With thousands of puzzles and new ones arriving daily, the amount of content is enormous. Recent updates also add support for Steam Deck and controllers, making it easy to enjoy from the comfort of your couch.
Verdict:
If you enjoy pure logic puzzles, Grid of Thermometers delivers a deep, polished, and endlessly replayable experience.
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