Grid Gauge

This number filling observation game has a super simple mechanism, intuitive visual effects, and easy to understand logic, eliminating complex tutorials and high threshold barriers.
Master the gameplay in seconds: click on empty grid cells and use the built-in keyboard to enter accurate numbers. A clear color differentiation system helps new players adapt quickly. The black numbers are fixed preset prompts that never change, guiding you to solve each level correctly. All the numbers you manually add will turn blue, making your progress clear at a glance.
A friendly error reminder system helps new learners steadily improve. Whenever you enter an incorrect number, the cell will turn pale pink to remind you of the error. There is no time limit, no failure penalty, and no difficult traps. Practice your observations and numerical judgments freely, gradually build your confidence in solving puzzles, and effortlessly grow from a complete beginner to a proficient puzzle player!