📐 Nonogram – Play Free Online Puzzle Game

Nonogram — Play Free Online (No Download)

Nonogram is a picture-logic puzzle: you are given a blank grid and a set of numbers along the top and side, and every correct fill reveals a hidden picture. It is often described as a crossword with pixels, and it is one of the most satisfying puzzle formats ever designed. Play it free in your browser — no download, no sign-up.

What Is a Nonogram?

Nonograms — also known as paint-by-numbers, griddlers, or hanjie — were independently devised in the late 1980s. The Japanese puzzle designer Non Ishida created the format, and the name “Nonogram” came from a collaboration with editor Tetsuya Nishio, who combined “Non” with the Greek -gram. Around the same time, similar puzzles appeared in Europe and were popularised under names like “Griddlers”.

The mechanic is simple but the reasoning is deep. Each row and column carries a list of numbers indicating the lengths of consecutive filled blocks, in order, separated by at least one empty cell. From those clues alone — with no maths and no guessing — the entire picture can be reconstructed. The fact that the answer is an image rather than a number is what makes the “aha” moment so strong.

How to Play

1. Read the clues — the numbers beside a row tell you the lengths of filled runs, in order.
2. Start with extremes — rows or columns with a single large number, or numbers that sum to nearly the full width, can often be filled immediately.
3. Mark what you know — fill confirmed cells and cross out cells that are certainly empty.
4. Use overlap logic — if a block of length 5 must fit in a 7-cell space, the middle three cells are certain.
5. Work back and forth — each row you solve constrains the columns crossing it, and vice versa.

Tips and Strategy

• Always mark empty cells explicitly. A cross is as much information as a filled square, and forgetting it is the most common cause of getting stuck.
• Solve the biggest clue first. Large blocks have limited possible positions, so they give away the most.
• Use the edges. If a row starts with a block of 3, and you know the first cell is empty, that block’s position narrows dramatically.
• Count your runs. When the number of blocks in a row equals the number of groups already placed, everything remaining is empty.
• Do not guess. A well-formed nonogram has one solution reachable by pure logic.

Why Nonograms Still Hold Up

Nonograms solved a problem that pure number puzzles cannot: they give a visible reward at the end. That is why they migrated so successfully from Japanese magazines to handheld consoles and, eventually, to the browser. Console puzzle series later introduced the format to a generation of players, and it remains a staple because the difficulty curve is controlled entirely by grid size — it can be learned on a 5×5 grid in two minutes and still defeats experts at 25×25.

Works on Every Device

This version runs in Chrome, Firefox, Safari, and Edge on desktop, tablet, and mobile. Click or drag to fill cells, and use the mark mode to flag empty cells. The grid resizes to fit small screens.

Game Details

More Puzzle Games

Enjoy logic at this pace? Try Sudoku, Entanglement, or the original number-sliding classic 2048.

Credits and Licence

The nonogram format was devised by Non Ishida and named with Tetsuya Nishio in Japan in the late 1980s. The word “Picross” is a trademark of its respective owner and is used here only as a descriptive term for the genre. This is an independent browser implementation. See our Copyright & DMCA Policy for removal requests.

FAQ

Is Nonogram free to play?

Yes — free in your browser, with no registration and no downloads.

Do I need maths skills?

No. The clues are just counts of filled cells; the solving is entirely visual and logical.

Can I play on my phone?

Yes. Tap to fill, and use mark mode to cross out cells that must stay empty.

Who created Nonogram?

Japanese designer Non Ishida, with the name coined alongside editor Tetsuya Nishio.