Our game is designed so that players cannot easily lose their progress, and thus, the progress is saved on the server.
 
Currently, there is no option to start a new game as there is no Game Over in the game. You can always get coins and continue playing. Meow-the-way, if you use any other device, you can download the game there and start anew.
 
This option may appear in the future, and we surely will notify you if that happens! Despite that, try to take the next challenge and complete the levels.