Number Dungeon turns arithmetic into a code-breaking quest. Drag digits from the bottom tray into empty squares so both rows and columns form valid equations. The rules are as simple as 1+1, but the payoff feels like cracking a safe. Thousands of handcrafted puzzles keep your brain engaged anywhere, anytime.
Equation crossword: every line must be mathematically correct
Instant feedback: correct tiles light up immediately
Endless puzzles: new grids added constantly
Stress-free play: no timers, unlimited undos
One-finger logic: drag and drop digits with a single swipe