Download 16x16 Sudoku Challenge HD apk 3.3.1 free for Android smartphone

10 May
16x16 Sudoku Challenge HD

Posted by Tobias Eckert in Puzzle | May 10, 2016 | 57 Comments

Apk file size: 1.7 MB

9x9 Sudokus bore you? Find out if you are ready for the ultimate challenge: 16x16 Sudokus.

This is for highly advanced Sudoku Players only.

- Play 4x4, 9x9 and 16x16 Sudokus - and unlock the ultimate challenge
- Touch-Screen, Trackball and Keyboard support
- Pencil in functionality
- Resume games where you left off
- Ease to understand tutorial
- Optimized for phones, tablets and Google TV
- Solve the build in challenge of 30 Sudokus, and play an unlimited number of Sudokus in Free Play mode

Not recommended for beginners.

Free, with ads.

With downloading the game, you explicitly agree to the Terms of Usage set forth at:

Whats new

    Version 3.3.1: Changed the background image
    Version 3.3: Compliance with new Google Play regulations

Tobias Eckert part of our Puzzle and have average installs from 10000 to 50000. Last Update May 10, 2016. Google play rating is 77.4426. Current verison is 3.3.1. Actual size 1.7 MB.

Download 16x16-sudoku-challenge-hd.apk 1.7 MB


Bill Claman

16x16 Sudoku challenge Pretty good game overall. Fairly easy to hit the small squares. 1 slight downside is the background color on the first level is a little too dark compared to the font... makes it a little harder to see

Clint Ressel

Works great Not perfect, but best 16x16 I've found by far.

Ronald Pry

16x16 Sudoku Challenge HD Great thinking challenge, can do the puzzle in your own time,no pressure

Katie Stubbs

16 x 16 great game No bugs, if you find 9x9 too easy, perfect game for you

Stephen Jackson

Not very pleased screen never stays on could definitely use some work

jac jac

16x16 Great, but could improve background color...hard to see & play for long periods of time...rated 4*s.

Laurie Campbell

Good sudoku for 16x16. I hope it sticks around. It seems all the ones I get attached to disappear!

Jenny Herzenstiel

Fun. Nice challenge. Pencil option works very well.

David Sutton

But to easy

Daryl Sartain

Fun and challenging

Anthony Smith

Love to play A Good challenge for those who are getting bored with 9x9 sudoku

Thomas Bonse

So addictive I used to get so bored with regular 9x9 sudoku puzzles, often finishing in under 5 minutes even on the most difficult ones. This one however, takes much more thought as the puzzles are 16x16. Yay :-)

Erin Grambart

Great game It is a great game. It contains hard 9×9 sudoku games as well as 16×16 games. They take some time to solve but are extremely addicting.

Bexx Soper

The Colours! The format of this game is great, being able to pencil in numbers is helpful, but the colours! My eyes ache after 5 mins of play time, please update any change this and I would give the game 5 stars.

Dawn R.F.

Visually unappealing. I don't like the colors of the grids & background. I would like to be able to have choices for that, to make the game easier on my eyes.

erin poppert

Great! I would like automatic deleting of pencil marks and when you highlight a number, I would like them all to highlight. Other than that, I love this and have been searching for super sudokus for a very long time!

A Google User

Great distraction Love this app. I'm bored of traditional sudoku, and this app provides a challenging and more fun alternative. I really enjoy it. Easy to use, very simple interface.

A Google User

About time Really good app, very hard to find larger than 9x9. Agree with another reviewer, the purple color scheme is hard to see and so hard on the eyes, otherwise would give it 5 stars

A Google User

Love it Been playing sudokj for so long the 9x9 was.boring. only suggestions I have is more levels and changing the color...the pink/purple is really hard to see.

A Google User

Great app I like this app! I got bored with 9x9 puzzled so I tried this and like it. Only two issues so far I noticed. First, when rotating phone, the cursor position should remain unchanged and not move to the bottom left of the board. Second, locking rotation does not work even when the phone setting is set to prevent rotation. All in all, a great app.

A Google User

It's ok Don't really play this I've as much but glad I can play a higher difficulty.

Joanne Cardow

Good game Just a bit more challenging than standard Sudoku.

A Google User

Love it Have been looking for this suduko game forever. The program never crashes. If there was a score of more than 5starsIwould give it to you. Would love to see a 25 x25

A Google User

HTC Hero This is a Fav Sudoku of mine..I LOVE that I don't have to carry a Big Book....This is Grreat

A Google User

Love It!!! Its so much more of a challenge than the basic 9x9 and if u dont want to play the 16x16 anymore you have that option to play the basic sudoku.

A Google User

16X16 Sudoku Challenge An excellent game. A little hard on the eyes though for the small cell phone screens.

A Google User

Only 1 game per level Only 1 game per level in the 16x16

Pauline Fallon

Paulinex4 I love playing Sudoku and when you put letters and numbers together it makes it even harder. Makes it more of a challenge .

A Google User

Really cool Would be 5 stars but in free play mode the locked puzzle fix so all boards can be played and achievements can be unlocked otherwise I love the 16x16- Samsung Admire

Carol Collins

Good Good game a little hard to start with but with a lot of patients & practice it does get easier

A Google User

Colour scheme is awful The colours are dreadful but the puzzles work well. Few suggestions: 1. Better colour scheme - easier to read! 2. Should be 0-9 and A-F (not 1-9 and A-G) 3. Ought to "cross off" completed numbers from the selection (see how Open Sudoku does it for a good example)

A Google User

I really enjoy the 16 x 16 Sudoku; however after finishing all fields in level 1, neither levels 2 or 3 will unlock. Any suggestions?

A Google User

Needs improvement, but at least it works! I agree that the color scheme is bad, and I wish it would grey out the completed numbers/letters. Another thing that would be helpful is to highlight rows/columns, or even better, highlight all of a particular selected number/letter so it's easier on the eyes.

A Google User

Rebecca Color scheme could be better!

Amanda Weinstein

Best 16x16 Sudoku! I've downloaded a lot of sudoku apps and this is the best one! It is hard enough to keep my attention and lets you put possibilities in each square! It's the first thing I download when I get a new phone!

Joe keller

Great puzzles. A few things could be improved but best I've found.

Danelle Bibles

...though I do wish the background star was optional, it's too bright and distracts from the game. I would also love more puzzles added/updated :)

Tobbie Smith

Needs work I hate the star, it's almost blinding. Please remove. If I had a migraine it would be so much worse! It would help if you crossed out the numbers/letters when you have them all on the board. Also, when you find you've made a mistake there's nothing to help you figure out which one is wrong.

Dave Hurlbut

I too dislike the star, it is blinding and distracting. I enjoy the challenge this game provides, but a helpful addition would be if all numbers and letters used could be shaded out to only highlight those left to play.

Sue Ellen Roach Fontenot

16 x 16 Sudoku Love the bigger Sudoku puzzle,i get bored with smaller ones. Need to add more 16 x 16 using ABC's. Also need a way to sync my solutions online, had to factory reset tablet, I was on 3rd level # 8 and lost all previous won puzzle and had to start over. Have had to delete app. 3 times, start over. Why doesn't check solution work. Don't want solution, just check when I do get stuck, instead reset. Need to change color of puzzle, blue & silver hard on eyes!

Tracy King

16 X 16 Fantastic fun and challenging at times

Chris deGruyter

Nice challenge I love the decent number of puzzles, but most other sudoku games have features that would be a godsend here (i.e. row/column/cell, matching numbers, reverse input modes) As option to turn off background images please!

Ivy C

"Select tutorial from the menu" - and exactly where is the menu? Uninstalled.

Adela Esquivel

I love a challenge !!!

Lymandia Allen

Great app Love a challenge

Hope Hurst

finally found the sudoku with letters&numbers! its my fav puzzle in a magazine but there are no books with just this type of sudoku! thank u, nw i have it on my ph

Jodi Carroll

My only wish was that there was a way to keep track of the letters and numbers you have completed for each puzzle

sandy freeland

16 x 16 Sudoku Challenge I've been looking for a decent app like this for quite a while. I love the 16 x 16 puzzles, but you're lucky if there is even one in a puzzle book! When I did find one I'd run off copies so I could do them over and over again. Now I've got this great app! It's true, it could use some tweaking, but it is still the best one out there. I'd love to see more "fields" added, I could sit and do these all day. Thank you so much.

Sue Ellen Roach Fontenot

16 x 16 Sudoku Love the bigger Sudoku puzzle,i get bored with smaller ones. Need to add more 16 x 16 using ABC's. Also need a way to sync my solutions online, had to factory reset tablet, I was on 3rd level # 8 and lost all previous won puzzle and had to start over. Have had to delete app. 3 times, start over. Why doesn't check solution work. Don't want solution, just check when I do get stuck, instead reset. Need to change color of puzzle, blue & silver hard on eyes!

Allen Russell

Can't really complain I have done 5-6 of the first set of 16x16's without pencil marks. The letters are small but that is because I use a phone- a tablet would be easier. The star isn't as bright once you fill the puzzle in. More puzzles please!!

jessie james

Jessie James Nice been waiting for this.

Karen Taylor

If you like sudoku, you will love this, I want to keep on playing,

Daniel Radick

Background Image Too Distracting The star or sun in the background of the puzzle is obnoxious and unnecessary. Please remove it. The app will be much more acceptable.

Tricia Hayes

Love these games. This one has the bones. It would work for me if 1) errors were highlighted and 2) depleted options greyed.

Cidalia Perez

I Love this Game/just need more levels Just need more levels. I also would request is that the penciled in #'s to larger. To be able to read the little penciled in numbers. Especially, in the harder levels. Other than that, I Love this game.

Nancy Lok

Need highlighted entry. It would be nice if the number or alphabet is highlighted. This will ease the eyes from searching round and round for the number.

Dave Hurlbut

Challenging Thank you for removing the blinding background. I enjoy this app, but wish the saved fields would stay saved until restored. Coming back to the game after a break seems to make it forget the previous saved fields. I would rate it a 5 if there was a checker for wrong fields. Don't want the solution but a checker to make sure I am on the right track could save hours of wasted time.

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