Why didn’t I receive my in-app purchase?

After you make a purchase, the items will be added to your account automatically. Sometimes it might be delayed. You could update your game ...

How to save my game progress?

If you want to transfer the progress to another device or reinstall the game, you need to log in Facebook to synchronize your game progress....

How can I refund my in-app purchase?

All refunds in our game are handled by Google through Play Store. You could apply for the refund through the link provided at the bottom of ...

How to open Piggy Bank?

The coins in Piggy Bank are collected depending on the number of defeated aliens. You could tap "OPEN" to buy the coins in your piggy bank w...

Why has an error occurred during my purchase?

Please ensure you have already logged in Google Play with your account. Download this game from the latest Google Play update.If the above w...