SUE Law

The SUE Law is a law set in place before the existence of Aminus itself, and (almost) unbreakable.

The three letters in SUE stand for: The SUE Law states that everything that exists in Aminus is secluded to Aminus's only universe, and that if something exists in a universe outside of Aminus, it cannot exist inside of Aminus. Oddly enough, even though supposedly cannot be broken, even by Aminus itself, the SUE Law has been breached. Aminus has knowledge of the wonderful, wonderful show known as Fairy Tail, which breaks the SUE Law and should be impossible. But Fairy Tail is wonderful and Aminus is god, so heck to the SUE Law.
 * S - Secluded
 * U - Universe
 * E - Existence

There is a large exception to the SUE Law that allows the existance of very general things, like grass and cats. The only reason something would not exist in Aminus is because it has reached too high a level of specificity. Here's an example:

Flying objects can exist.

Flying vehicles can exist.

Planes can exist.

Planes meant for fighting can exist.

Planes meant for fighting that belong to a military can exist.

Planes meant for fighting that belong to the U.S Air Force cannot exist.

Another reason for something not being able to exist is because it is of another secluded universe. For example, Freddy Fazbear cannot exist, nor can his band. No, not even Foxy McGerald, you fangirls. Rainbow Dash cannot exist. And the saddest part is that Natsu-senpai cannot come to Aminus.