Let's say the multiverse theory is true, how would a Christian insert God...?

[Esquilax]

Why not create a better single world then - just make the place what it needs to be? Why mess about? Is he the equivalent of a toddler burning ants with a spyglass?

Is he prone to mistakes? Does he lack foresight or have episodes of lesser cognitive thought?

Or does have to play by the laws of physics? Is he that weak?

If you were cognitively capable of inspecting multiple realities, in their entirety, without any division of your attention between them, wouldn't it follow that focusing on a single reality would get rather boring, if you're aware of the extents your consciousness could stretch to? It's not his fault that the variables of our universe turned out a planet with less than optimal settings.

Granted, that makes god a hugely detached jerk just looking for entertainment, but we already knew that just from the bible, multiverse or no.