Windows program

SudokuZoo

Sudoku with cute animals instead of numbers. Pick your own 9 favorites from 47 animals. No ads, and free to play.

Play it free See the prices

Works on Windows 10 and 11. No account, no internet needed to play.

What it is

Sudoku with a friendly twist: instead of numbers you play with animals. A clean board, four levels, tiny animal pencil notes, no ads and no pop-ups.

Pick your 9 animals

Choose any 9 from 47 animals: dogs, cats, penguins, owls, giraffes and more. Change them any time, even in the middle of a game. Prefer numbers? One tick switches back.

Four levels

Easy, Medium, Hard and Expert. Every puzzle has exactly one answer and can be solved by reasoning, with no guessing.

Pencil notes

Switch Notes on and tiny animals go in the square as you work out where each one could go. When you put in a right animal, it wipes that animal from the notes in its row, column and box.

Check and undo

Wrong animals show in red right away (you can turn that off). Undo any move, erase a square, or press Check.

Saves where you stopped

Close the program in the middle of a puzzle and carry on later.

Prices

One program for everyone. A key unlocks what you bought, once, for good. There are no subscriptions.

Free

$0
No time limit
  • Easy: as many as you like
  • 1 Medium game a day
  • 1 Hard game a day

Key 1

$3.00
One time, yours for good
  • Medium: no daily limit
  • Hard: no daily limit

Key 2

$3.00 more
or $5.00 if you skip Key 1
  • Everything in Key 1
  • 1 Expert game a day

Key 3

$3.00 more
Everything unlocked
  • Expert: no daily limit
  • All levels, for good

How to get it

  1. Download the programDownload the zip file, unzip it, and open SudokuZoo.exe from the folder. The free game has no time limit.
  2. Like it? Email me to order a keyTell me your name, which key you want (Key 1, 2 or 3), and a friend's referral code if you have one. I reply with payment details.
  3. Paste your keyI email you the key. Paste it into the key box and press Unlock. You only do this once.
Email to order Write in Gmail

The download link is coming soon. Email me and I will send you the free trial.

Order email:danielhay@gmail.com

Share it and earn

Every paid key comes with your own referral code. It shows in the program. When a friend buys a key and gives your code, you earn.

5 friends$2.00 off your next key
10 friendsA free Key 3
After 10$1.00 for each new customer

A friend counts when they buy their first key. Later upgrades by the same friend do not count again.

Questions

Windows says "Windows protected your PC".

SudokuZoo is a new program and is not code-signed yet. Click "More info", then "Run anyway".

What if I lose my key or get a new computer?

Paste the key from your email again. Keys never expire and do not need the internet. If you lose the email, write to me and I will send it again.

Does it save my game?

Yes. Each level keeps the game you were playing, so you can carry on later.

What counts as one of today's games?

Starting a new Medium, Hard or Expert game uses one of that day's games. Carrying on with a game you already started is free. A new day starts at midnight on your computer.

Is there a phone version?

Not yet. SudokuZoo is for Windows for now.