The biggest and best Sudoku game ever! Play now for FREE!

We've created a GIANT grid of over 350 hand-crafted Sudoku puzzles to challenge players of all ages! Can you complete the whole grid, beat the Quests, and collect all of the Trophies?

To fully master the game you must complete all these challenges:

● Play on Easy, Medium, Hard and Super-Hard grids
● Complete each of the 361 individual sections
● Collect all 45 of the prestigious trophies
● Complete all 57 quests
● Unlock all 10 achievements

World’s Biggest Sudoku comes complete with these helpful features:

● Use Pencil Marks to help with your deductions
● Useful Hint features to help if you get stuck
● Choose from several background themes to suit your style

Take the challenge now!


Please select the HELP option from the Options menu (the gear icon in the top right corner of the game screen) if you require assistance.

Alternatively you can contact us by email:

World's Biggest Crossword is free to play, but contains optional paid items to unlock puzzles more quickly.

Facebook: /BigPuzzles - Twitter: @BigPuzzles


● One Clue Crossword
● World's Biggest Picture Cross
● World's Biggest Mahjong
● World's Biggest Crossword
● World's Biggest Wordsearch
● World's Biggest Jigsaw

What's New

Version 1.3

- Improved graphics
- A new in-game Help system
- More ways to earn Tokens and Coins

If you like our game, please take a moment to leave us a user review! Reviews help us bring you more great games. Thank you!

Ratings and Reviews

4.4 out of 5
1.1K Ratings
1.1K Ratings



Easy introduction with simple games to build knowledge and confidence. Addictive now on 3rd board, having sent it to the cloud and then started again.
Starting again for a fourth time, great fun and no longer a need to rely on newspaper puzzles
Now on my 5th game, keep the grey matter working anditsfun
Onto round 6 can’t imagine a better sudoku puzzle and it’s free

Love it


I love sudoku so I love this game a lot. I’ve got all of the words biggest games like crossword, word search and this one.
The only thing I wish you could put in is an option to restart a level because I like to get 3 stars on all levels and if I loose one I have to finish the level to restart it.
But anyway great game

Very good


Quite addictive, brings back the classic game of sudoku which seemed to have disappeared. Shame you have to have tokens to do more puzzles though. Feels like the game is trying to force you to pay money. I can only earn 10 tokens and they stop building up. Now I'm at the point where most of the remaining puzzles need more than 10 tokens and I can't play them.


AppyNation Ltd
128.5 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad and iPod touch.
English, French, German, Italian, Portuguese, Russian, Spanish
Age Rating
Rated 4+
© Supersonic Software Ltd.
In-App Purchases
  1. Tokens Booster Pack £2.99
  2. Tokens Starter Pack £0.99
  3. Tokens Super Pack £4.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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