I certainly am not complaining about Unreal. The amount of resources needed to create and maintain such beast is quite high, so the chances of having something

I certainly am not complaining about Unreal. The amount of resources needed to create and maintain such beast is quite high, so the chances of having something similar being open source are minimal. I'm fine with that license. It's already more open that a lot of the stuff out there. Sure I wish we had Linux-like software for everything.