About Level Up Button World-XP Boost
This is the fourth release of Level Up Button series and maybe the last one!
To don't be repetitive I decided call it Level Up Button world because you have to unlock the world to win xp and customize your button screen.
-Save your data in the cloud.
-Enjoy of the 3D graphics.
-Unlock worlds and get achievements.
-Level up yout DroidGames account to be the best player on the leaderboards!
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