Those really aren't scams. I'm talking about the games you have to buy, and then the game doesn't work (intentionally) or the game isn't what was advertised. Games that advertise a Minecraft clone but are really a basic box game or something like that are good examples, and people are completely mindless when it comes to Minecraft.
I don't like energy based games, but some people do, as is clearly evident by the masses purchasing little items or energy or whatever