We don't know, or can't prove, how the universe was created. So, when we say that God did it, aren't we just kicking the can down the road? Who or what created God?

The simple answer to this question is that the God that I believe in wasn't created. He has always existed and does not need a creator.

I understand though that this answer is not very satisfying. Let me try it another way.

These ideas will make the most sense to someone that plays computer games that simulate worlds to some extent. I am thinking specifically of Role-Playing Games (RPGs), Massively Multiplayer Online games (MMOs) and First Person Shooters (FPSs).

For those unfamiliar with these types of games, I'll give a brief explanation. All of these games simulate a world and the more ambitious ones may even simulate a universe or some portion of one. Some of them attempt to model our own world to some extent, but for others, the world being modeled exists only in the designers' imaginations. All of these worlds have their own rules and laws that govern them. Within the framework of the simulation, these are just as real as our rules and laws are to us in our world. They have their own laws of physics, their own concepts of real and ethereal, etc. Within these worlds, there are two main types of beings, those that are controlled by someone from our reality that is “logging in” to the simulated world and those that exist entirely within and are fully controlled the simulation. The ones controlled from outside are called Player-Controlled characters (PCs) while those controlled by the game are called Non-Player Controlled characters (NPCs). There is a lot more that could be said about these games but for the purpose of this answer, the concept of framework of the simulation and the PCs and NPCs that inhabit it are all that we really need.