To update your game, go to the Google Play Store, enter the “Updates” section, and then update The Sandbox Evolution by tapping on it. 
  
  
   If a message "Package File Invalid" pops up,  please follow these steps:
  
  - Go to your Device's Settings menu.  
 - Then, go to  Applications   (may also be labeled "Application Manager").   
 - Tap over to "All Applications", then Open the Google Play Store app.   
 - Tap on  "Clear Data"  and  "Clear Cache"
 - Relaunch Google Play and install or update our game again.