9Boom Beach – $44 million
Next on our top list is a strategy game, named Boom Beach. Owned by Supercell, Boom Beach is a gaming app for all of those who love this kind of games.
Players have to fight a war on a beach against the villain Blackguard.
Although it’s free to play, there are multiple in-app purchases you’ll need to buy with real money if you need some strategic advantages. And guess what? A lot of people do buy them.