NumberGlyph

NumberGlyph is styled as a vault to open. The hidden number has four digits on Easy, five on Medium and six on Hard. Before your first guess you already know two things: the sum of its digits (Σ) and its shape, a row of up and down arrows showing whether each digit is higher or lower than the one before. Each guess then colours its tiles: green for the right digit in the right place, yellow for a right digit in the wrong place, dark for a digit not in the number.

If you want more help, you can tap extra fingerprint cards to reveal further clues, such as which positions hold odd or even digits, how many digits are prime, how many are unique, or the sum of the squares. These hints never change the answer. Each guess also gets a row of small chips that compare its own sum, shape, odd/even pattern, prime count, unique count and sum of squares with the hidden number's, so a wrong guess still narrows things down. You have six attempts to open the vault.

Puzzles are dated, shared by all players and change at midnight UTC, and an archive holds every past day in all three modes, with a streak counter and a share button for your result. NumberGlyph is the flagship of the Glyphverse, a set of twenty-five puzzle and skill games by a developer named Sean, including OpGlyph, SudokuGlyph and ConnectGlyph. It suits fans of Mastermind and Nerdle who enjoy a bit of arithmetic deduction.