A friend of mine showed me a very interesting trick on Android 4.1, which is the Jelly Beans game! You don't need to download any app, or be connected to the internet. All you need to do is just follow the below steps:
PS: This game is meant to only kill time! lol
First: Open your notifications center, and then go to settings.
Second: Go to About Device.
Third: Press many times on Android version, until the game is on.
Finally: Keep pressing on the big Jelly Bean & enjoy moving away the Jelly Beans! XP