TAP A CELL, THEN TAP ITS NUMBER
ONE OF EACH DIGIT PER ROW, COLUMN, BOX
▶ PLAYThe one rule the demo can't show you: one of each digit per row, column, box. GRID UP is already running when the page opens — the built-in AI plays it for you, so you can see what it is before you touch anything. Tap once to take over mid-run: nothing to read, nothing to install, no account. Swipe up whenever you want the next game.