In my comic, DECEPTION, there are 3 universes with different laws of physics.
-Neververse depends on electromagnetic fields for gravity, it is just a noise of rocks splattered around with a lack of temperature control
-Middleverse is like our universe IRL but travel is the easiest because the fabric is very moldable
-Angelverse has mass seas of energy with huge quartz crystals and pillars which are molded into houses and platforms
Also a shameful advertisement, yeah, my comic.