Becoming a Game Developer in Your Spare Time

I've published games and apps in both the iTunes and Android stores, but in some ways, I really don't consider myself a game developer. Maybe that's because I wear many hats and have many different jobs that I do full or part time to pay the bills. Or perhaps it's because I still have a few "big" projects in my head that I want to complete before I will consider myself a real game developer. Maybe because of this,