years ago there were tons of flash sites for games, long before smartphones. a whole heap of those games were repackaged and sold as games in app stores, and they often got into the news because somebody’s toddler racked up $100,000 or some crazy amount with in game purchases. kongregate was the first site that I remember was aimed towards the Devs making money or getting a name etc.

Pretty sure that angry birds was a repackaged version of a very popular trebuchet game at the time… There were a lot of them.