Bonus menu
The "Bonus" menu is an In-App Purchase which allows you to earn double coins, have a coin magnet, and can give the game a retro appearance.
Completing levels efficiently
Go for completing levels as quickly as possible and not maximize collecting coins.
Enemies
Besides staying away from spikes, stars, and electrical rays, you will have to deal with various types of robots.
Blue Robots: Can be destroyed by laterally swiping into them, but do not land on their spiked heads.
Red Robots: Very dangerous and should always be avoided.
Yellow Robots: Cannot be destroyed, but you can bounce on their heads to reach very high places.
