Dead Trigger has 5.000.000+ (Google Play) downloads. The game is free but it has the option to buy coins in game(In-app billing). How much money did it made? It is profitable if I make a game and offer it free with in app purchase or if I sell it?
Thanks.
Hello,
You directly contact them by e-mail or by their forums in here : http://www.madfingergames.com/
Have a nice day.