Floating in black endless void was a tall, attractive man with tan skin and a muscular build. He has golden eyes and very long,black hair tied in a ponytail.And he was playing with a 3D projected figure of a planet.

He was spining it around and the zoomed in to see a tiny figures that looked like humans that dressed as cultivators, some of them were fighting with sword or flying on them and some were fighting with elements.

This was Eru,In the past he was human, who by unknowingly transmigrated and that to into a formless being in a parallel world with a system called "World Creator system".

Like the name suggests it was sandbox like system, which had the ability to create worlds.

It was a direct system, who's role was to make him a supreme being.

Which also had mall to buy things like high technology, super powers, summons, ....etc.

When questioned about why he needed any of them after all he was a god.The system explained about restrictions being placed on creators, when they enter there created world.Like you would be a demigod figure in the world you created, so in normal worlds it might be safe.But as you create higher realm world it might get dangerous for him.

Thus having these powers, skills, cultivation techniques and summons are consider helpful

The knowledge provided by the system said there are low, medium, high level gods and each having 6 stages to it.Also there one final level,which was the Supreme being.My rank at the time was a low level god and achieve or gain power was create world and gather what was known as Chaos energy.

The way for us to create world was simple, it was by using the very same chaos energy.The system gave a missions and achievements, which when accomplished would give us the chaos points.

These chaos points could be used to by things from the system.So like that he slowly created one world after another.

At the start a copy of his original world and nurtured from primitive age to space age.Where he slowly learned the fact religious belief also can be converted into Chaos energy or points.

Also some rewards given by the system included templates of world that he knew as TV shows like GOT, MCU...etc

At the time he didn't use these, since there are requirements for certain templates like for MCU, you needed to be high level god who can not only create universe, but also the multiverse.

So he stuck to his missions and he went on creating world with sci-fi ,magic and cultivation worlds.

He created variation of these worlds and experimented with them like going into one of the worlds and interfering with world like providing blessing, skills and one time even had a relationship with a women in the cultivation world.

He decided to take the name Eru Ilúvatar from then on, when he enters these world.

So upon reaching high level god, he just got bored.Since in this parallel world he was a god like being, who could just wave a hand and destroy a country or resurrect the dead.

Now even his restricted form or avatar has power ranging from Charles Xavier's telepathy, Magnetos Magnetism manipulation,Power Augmentation....etc

That's when he then remembered about the templates and decided to experiment on them.

There where multiple templates to choose, but it decided to go for the lower level ones.Which where GOT and Van Helsing.