Family Friendly
Contains Ads
Offers in-app purchases

Mental Arithmetic is boring? - correct !

Freeing avatars, loading boosters, receiving stars, sending other players a Prank is fun !

Do you want to be motivated in the long term and improve your knowledge in mental arthmetic by the way?

Then you are right here !


Your friends are in prison - Your mission: Liberate your friends!
You need coins, boosters, stars and you have to fight against the guard!

You can liberate 1 friend per day.
If you play every day, you have more than 3 months of fun!
This will automatically improve your abilities in mental arithmetic. Just concentrate on freeing your friends, the rest comes automatically.

For the liberation of your strongest avatars (5 stars), you need at least 5 stars. To reach 5 stars, 50 avatars must be in freedom. (After 50 days).
Liberate the avatars with fewer stars before.


You can play with friends via Wifi, Bluetooth or Internet.
Up to 5 players can compete at the same time with Wlan. Several lobbies are possible, Several games can be played simultaneously in one Wifi.
Play together with your friends or family.

3 different Pranks bring fun into the game and reduce the game not only to mental arithmetic.
Pranks twist the numbers, split the display, and make your player's device vibrate.
Send Pranks to your fellow players to prevent them to solve their problem.
Protecty, Handicapy, Winny and Timy help you get closer to your goal.

In single game mode, you will receive gift vouchers.
You can send gifts to your fellow players with whom you have previously connected via Bluetooth, Wifi or the Internet.
Send Coins or help them free their avatars from prison.
The gift will be received in any case, even if your fellow players are offline!
Your fellow players will receive a message with a gift.

After you have connected, you will be informed when your fellow player hits your highscore.
You will receive a message on your device and you can react.

You have a ranking in which only your friends are and a top 10 ranking.
You can reach 3 different highscores.
Single player highscore, multiplayer highscore and bettyhighscore.


24 dynamic levels adapt to your performance in mental arithmetic.
You can also set the game to a static level.

If you need training, you can increase your performance in mental arithmetic in the bootcamp.
In the bootcamp, you can solve tasks without time limitation.
The result will show you your time per task.
Presets give you the opportunity to practice the tasks of the game.


Every 15 minutes, you will automatically receive a bonus. Loyality bonus, Speedgame or Betty bring change and excitement into the game.

- Child safety (protects against accidental In App purchases).

- Multiplayer (Wifi, Bluetooth and Internet)
Wifi: Up to 5 players can play against each other - several lobbies are possible.
Bluetooth: No Internet required to play a match.
Internet: Connect with a distant friend.

- Singleplayer
Free your Friends - You can free 100 avatars.
24 dynamic levels adapt to your performance.
Pranks and boosters increase gameplay.
Bonus rounds bring you closer to your goal.

Other features:
- more than 200 background images can be selected.
- You can create your own background image.
- choose your own background music.

Why is the location permission in the app?
Bluetooth needs to work the location permission.
Can be read here:
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31 total

What's New

bug fixed
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Additional Information

September 28, 2017
Current Version
Requires Android
4.0.3 and up
Content Rating
Interactive Elements
Digital Purchases
In-app Products
$0.99 - $44.99 per item
Offered By
In den Grashöfen 39 Germany - 38110 Braunschweig
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