I don't think anyone is suggesting this is an easy problem or that there is some answer already out there for the taking. You can lament that state of the art g

I don't think anyone is suggesting this is an easy problem or that there is some answer already out there for the taking. You can lament that state of the art gaming technology is put to use pandering to largely adolescent and tremendously violent fantasies without knowing all the answers. That being said, a great example of simple, (relatively) nonviolent gameplay giving way to countless hours of playing time is Minecraft. A Minecraft or even BridgeBuilder clone with this CryEngine would be pretty rad.