Is Ninja Crossword Challenge free to play?

Yes, 100% free — no download, no account, no payment. Open your browser and play instantly.

Does it work on mobile?

Yes. The game uses HTML5 and runs on Chrome, Safari and Firefox on Android and iOS devices.

How do I save my progress?

Progress auto-saves to your browser's local storage. Avoid clearing browser data to keep your save file.

Can I play with a friend?

Some modes support local 2-player on the same device. Check the main menu for multiplayer or co-op options.

The game is lagging — what can I do?

Close other browser tabs to free up memory, or try a different browser. Chrome generally provides the best performance for HTML5 games.

Ninja Crossword Challenge

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It's time to test your vocabulary with Ninja Crossword Challenge, an educational puzzle online game for everyone, and a free game for kids to improve their vocabulary. All you have to do is fill in the words in the grid, the game has more vocabulary than you can imagine, ready to take on my challenge?