All the apps on your devices are divided into two categories: system apps and user apps. The first category has essential apps that you should probably be more careful with, while the second category has games and other less important apps.
Once you've selected an app, you can change its preferences as well as its database information. You can even play, view, or edit the app's internal files.
Modify your apps with the interesting app Hack App Data. As long as you're modifying apps just for recreational purposes, there's no harm in it!
Android 3.1 or higher required