The award-winning, cult-classic KooZac is back with a fresh new look for mobile.

KooZac is a game caught between Tetris and Sudoku that’s as challenging as it is entertaining. The concept is simple: position the falling blocks on top of each other to create the target numbers and clear the blocks.

Described as utterly addictive yet surprisingly educational, KooZac takes the best bits of a block puzzler and a mental challenge game to produce one hard-to-put-down revelation.

- Free to play forever
- Easy to learn, endless fun to play
- Like Tetris with numbers
- Designed to improve mental arithmetic
- Beat your high score


Love KooZac? Don’t forget to rate us.


And you can find us on Facebook: or to discover other great games like KooZac.

What's New

Version 2.3

More numbers, targets and combo's added

Ratings and Reviews

3.8 out of 5
583 Ratings
583 Ratings
Corigens25 ,

Fun while it lasts

This app is accurately described as "Tetris with numbers". However, I found it to be simpler and less frustrating than Tetris.
The format is similar to Angry Birds: there are fifteen games in a level, and four levels to play in the app. The main difference is that it involves basic addition and subtraction. As mentioned above, it is like Tetris in that it involves matching falling blocks.
My only complaint is that there are not enough levels. I finished the game within one day, and gone back and mastered all the levels with a perfect score in another day.

BalongBolt15 ,

One word, ADDicting!

This game is very addicting, but if you don't really like ARITHMETICS stuff like me, you won't find this game interesting. But give it a chance, and probably you'll like MATH stuff by then you tried playing this game. The only bummer are the controls. Sometimes, I swipe down the wrong column and everything's messed up(it will make sense when you play it in the iPhone/iPod). Deserves to be the APP OF THE WEEK!

NaeSlayer ,

Could be a fun game if I could play

I played this game for a few minutes and t was pretty fun, but then it started asking me to sign into the Game Center, repeatedly. I deleted the game because every 5 seconds the Game Center would pop up asking me to login. I have no interest in connecting to the Game Center, or playing a game that would require me to do so. I am guessing this problem is somewhat specific to this app because I'm able to play other games without constant interruption.


Viker Limited
146.9 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
©2017 Viker Limited
In-App Purchases
  1. package of 800 coins $0.99
  2. package of 2000 coins $1.99
  3. package of 10000 coins $4.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like