About Nonogram Night Grids
Nonogram Night Grids is the endless, purist version of the classic picture logic puzzle, set on a calm plum board with glowing teal ink. Every grid is generated fresh and verified by a line solving algorithm to have exactly one answer that can be reached without guessing, so there is always a logical next step waiting to be found. Choose a quick five by five warm up, the classic ten by ten or a demanding fifteen by fifteen, where long chains of deduction ripple across the whole board. By default the game plays the traditional way: nothing tells you when a painted square is wrong, and you check your own work against the clues, exactly like a printed puzzle book. Prefer some help? Turn on Show Mistakes and wrong squares are flagged the moment you paint them. Drag to paint whole runs, right click or switch modes to place crosses, and watch satisfied clues fade away. A Daily Grid gives every player the same puzzle each day, your statistics track best times per size, and a gentle hint points out a line where the numbers already decide the answer. Solved grids reveal a shimmering rainbow pattern.
How to play
Each clue lists the runs of painted squares in that row or column, in order. Tap or drag to paint, right-click or Cross mode (Tab) to mark empty squares. Mistakes are not shown unless you turn them on in the Menu. Hint (H), Undo (Z), sizes and Daily in the Menu.
Controls
| TapDrag | Draw |
| Right-clickX | Place |
| Tab | Swap |
Difficulty: ★★★☆☆ · Released: 2026-10-07