Regna

600 puzzles, one rule: a single crown per row, column and colour — and none may touch. No ads, fully offline, across five levels.

Place exactly one crown in every row, every column and every colour region — and never let two crowns touch, not even diagonally. That is the whole rulebook. The rest is thinking.

600 puzzles across five levels, from a 5×5 opener to a 9×9 masterpiece. Each has exactly one solution, and every one of them can be reasoned out. You never have to guess.

• Five levels of 120 puzzles, chained: solving one opens the next • Hints in three steps — where, then why, then the move itself • Automatic crosses, undo, and a strict mode for purists • Best times per puzzle; an interrupted game picks up where you left it • Colourblind mode, VoiceOver, dark mode, large text up to AX5 • Fully offline. No ads, no accounts, no data collection.

Five puzzles a day are free. Want more, unlock everything once — a purchase, not a subscription.