Mobile games rely on the "freemium" model of in-app purchases to stay afloat. Low entry costs and small micro transactions rule the field, nickel and diming customers for everything from costumes to level unlocks. It's something that traditional handheld games have, for the most part, avoided. Pay $40 upfront and you get your game, no progression unlocks or stat boosters.
That is, until Shin Megami Tensei 4 shipped with pay-to-win money and EXP boosters as DLC. How did this happen and what does it say about the future of handheld gaming?