Free? My son runs his own commercial IT business. He'll tell you that almost all RPG's are free, and for a very good reason. Because once your game is recognised, sponsors and banner advertisers drop on you like ash from a volcano. The best example of exploiting banner advertising is FaceBook. Every game requires you to enroll your friends, because every hit generates cash for the developer. In it's hay day, if every player logged in once a day, Utopia could generate a minimum $300 per day. You think Mehul did this for fun for 10 years? He earned a damned good living from it. You try buying a coffee shop from your wages.