Prologue:

The Aria of the Universe

They are are people fully able to shape the world around them. Everything around them is a block, a wall, a tool, to shape their beliefs. They didn't have names they went with, but we often called the Crafters, builders, explorers, and collectors. And just because you were born in that world didn't mean you had that ability.

Those universes where they belonged had powers to keep them in check, and the max of those people you could ever see at once was 4.

For the Overworld, that power was the bedrock the world was covered in. It was unbreakable. And should someone break it, the place it leads to was the endless, all-destroying void. The Wither was believed to the early idea to enforce this, but no one knew what happened, and why its called on with skulls.

For the Terrarians, That balance was the Evil Biomes. Spreading, hazardous beings, one, a cancer caused by the sins of those living in the worlds of Terraria, and the other, a hive mind connected to all worlds it lived in, both seeking to balance the world. And should the explorer break the core of the world, the Hallow unleashes, extreme purity that serves to cure threats that attempt to disrupt the natural balance.

But even then, the crafters were strong. Bedrock was broken, the void covered, walls were built to stop the spread, and the Wither was killed many times.

Soon, those people grew tired of being alone. They built a device, to point towards the heavens in hopes of finding others.

One day, the Overworld received a message. It read:
"Are there others out there, changing everything around them? We sand this out and hope it's heard. - Terrarians"
And just as fast as they got it, they replied:
"We hear your far outcry! -Overworld"

Time and travel across space takes forever, but soon enough, the two had faster communication. They sent gifts and items over to each other, to try and impress them. But they had never seen each other...

That was ending, as a clever builder, named Aria, figured out how to teleport between the two worlds, using the Teleporters of the Terraria world and the Ender pearls of the Minecraft world.

But things won't go so smoothly.

AN: I have gone insane.

This will be a side series of mine, so it won't get updated all that often.