Jetpack Joyride was unfortunately made exclusive on the Amazon App Store when it first released. God knows why when the Amazon App Store still isn't available in many countries. However the game has now landed on the official Play Store.
The game is one of the most popular on the iOS App Store and has got over 200,000 ratings. It's also won quite a few awards because it's so popular and addictive. Best of all the game is free! You do get in-app purchases but you can play the game without having to buy anything which is great. The in-app purchases just enable you to gain coins quickly which can then be used to buy things like suits, upgrades, extra lives...etc.
The game comes from the guys who made Fruit Ninja, now we all know how popular that game is.