Making games for mobile devices has always been tricky. As you might have seen, some games charge you money, while other games don't. However, how do those people who release their games for free make a revenue?

Monetization has always been an essential topic related to the game industry, mostly with mobile games as the mobile market has its own rules and competition. Adding ads or in-app purchases is the best way to monetize your game, but keep in mind that it has to be done in a way that makes the user like it, not in a way that makes them run away from the game.

Another thing to keep in mind is that in earlier releases, the majority of these online features were not exposed to the editor, but currently Epic has released UE 4.5, which has all the online and social features exposed in the editor, ready to be used. So I had to upgrade my system and the whole environment to UE 4.5, XCode 6.1, and OS X Yosemite to enjoy the new features and engine...