Discover the Nonogram Game
Our Nonogram Game is a logic-driven puzzle where you use numerical clues to reveal a hidden pixel-art picture. Also known as Picross, Griddlers, or Hanjie, this game tests your deductive reasoning rather than your vocabulary.
How to Play
The numbers on the left and top edges of the grid indicate unbroken lines of filled-in squares for that row or column. For example, a clue of "3 2" means there is a set of three filled squares, followed by at least one empty square, and then a set of two filled squares. Left-click to fill a square, and right-click (or use the toggle button) to mark a square with an 'X' that you know must remain empty.
How the Generator Works
Unlike static puzzle apps, this page features an infinite random puzzle generator. When you select a difficulty (5x5, 10x10, or 15x15), the JavaScript algorithm dynamically generates a solvable grid state and calculates the exact row and column hints required to recreate it, ensuring you never play the same board twice.
Tips for Solving Nonograms
- Start with the Largest Numbers: Look for clues that span more than half the grid. For instance, in a 10x10 grid, an "8" means the middle 6 squares MUST be filled regardless of where the block starts.
- Mark Your Crosses: Using the 'X' tool is just as important as filling blocks. Knowing where a block cannot go is critical for narrowing down the possibilities in adjacent lines.
- Work from the Edges: If you fill a square on the absolute edge of the board, you immediately know where the perpendicular blocks must extend.
Related Logic Puzzles
If grid-based logic is your specialty, you might also enjoy our mathematical Sudoku Solver or jumping back into word logic with the Category Groups.
How to Play Nonogram — Complete Guide
Nonograms — also known as Picross, Griddlers, or Paint by Numbers — are picture logic puzzles where you fill grid cells according to number clues to reveal hidden pixel art. Our free online Nonogram game generates unlimited random puzzles in 5×5, 10×10, and 15×15 sizes with a timer, fill/cross tools, and win detection — no download, no login.
Nonogram Rules — How the Game Works
- Read the clues: numbers above each column and left of each row describe consecutive blocks of filled cells. A clue of "3 2" means a block of 3 filled cells, at least one empty cell, then a block of 2.
- Fill cells you are certain contain part of a block (left-click or Fill mode).
- Cross cells you are certain are empty with an X (right-click or Cross mode) — eliminating impossibilities is half the game.
- Most puzzles are pure logic: guessing is rarely required. Each deduction follows from the clues plus what you have already placed.
- Win by matching all clues: the game auto-checks every row and column; when all match, the hidden picture is complete.
How to Solve Nonogram — 6 Pro Strategies
- Start with the biggest numbers (overlap method). On a 10×10 grid, a row clue of "8" guarantees the middle 6 cells are filled regardless of where the block sits. Fill overlaps first — this single technique solves most easy rows instantly.
- Complete full lines. A clue whose numbers plus mandatory gaps exactly equal the grid size has only one solution — fill the entire line (e.g., "10" on a 10-wide row fills everything).
- X out impossibilities. If a column clue totals far less than the grid height, mark the far ends with X's. Aggressive crossing exposes the real placements.
- Work rows and columns together. A filled cell from a row deduction constrains its column, which constrains the next row. Alternate directions instead of grinding one axis.
- Use edge logic. Large blocks touching grid edges have few possible positions. Test each placement mentally — cells filled in ALL placements are guaranteed.
- Size up gradually. Master 5×5 first (2–3 minutes each), then 10×10, then 15×15. Bigger grids need the same techniques — just more patience.
Nonogram Grid Sizes
- 5×5: 2–5 minute puzzles — perfect for learning clues, fills, and crosses.
- 10×10: 10–20 minute puzzles — the classic Picross size with real pixel-art reveals.
- 15×15: 25–45 minute epics — detailed pictures and deep logical chains for experienced solvers.
Nonogram vs Sudoku vs Picross — What's the Difference?
These names describe the same puzzle family. Nonogram is the generic term, Picross is Nintendo's branded version, and Griddlers is another common name — all use number clues to reveal pixel art. Sudoku, by contrast, fills digits 1–9 with no picture reveal. If you enjoy Nonogram's visual payoff, try our Sudoku game for pure number logic with the same deduction thrill.
Why People Love Nonogram
Nonogram fuses Sudoku-grade logical deduction with the visual payoff of pixel art. Every deduction is provable, every X is earned — and the finale reveals a hidden picture, turning 15 minutes of hard logic into a delightful surprise. If grid logic is your specialty, try our Sudoku game next.
Nonogram Game FAQ
What is Nonogram?
Nonogram (also called Picross or Griddlers) is a picture logic puzzle where you fill grid cells according to number clues to reveal hidden pixel art.
Is Nonogram free to play?
Yes — our online Nonogram game is completely free with unlimited randomly generated puzzles and no registration required.
How do you read Nonogram clues?
Each number is a block of consecutive filled cells. "3 2" means a block of 3, at least one empty cell, then a block of 2.
Do I ever need to guess in Nonogram?
Usually not — most puzzles here are solvable by pure logic. If you're stuck, look for overlap guarantees and impossible cells to cross out.
Can I play Nonogram on my phone?
Yes — our game supports tap-to-fill, touch drag, and Fill/Cross mode buttons on phones and tablets.
What grid sizes are available?
We offer 5×5 (quick), 10×10 (classic), and 15×15 (expert) randomly generated puzzles.
