Earth

Earth is presumed to be Roblox's competitor. Because of Roblox-Earth tensions, Roblox built its fourth inter-universal wall between Roblox and Earth, but in 2023, a person named Elon Musk and a Robloxian named broke this by noclipping very hard which broke the wall creating a portal between realities. All Earth civilians had access to Roblox at this point and all Roblox civilians have access to Earth. However, once they enter Earth due to what is known as a "Reality Barrier", they will be reverted into Robloxian versions of themselves. Upon this happening, the portal would be contained by the RSCP Foundation and Global Occult Coalition on the Roblox side and the SCP Foundation and Global Occult Coalition on the Earth side to block any travel between worlds. The Roblox Player would be the only thing authorized to enter the portal.

It is unknown if the planets will ever declare allies/enemies.

Fun Facts

There are over 58.8 million humans who are in Roblox currently.

And another 58.8 million humans who played the simulation version of Roblox currently.

Both Earth and Roblox share the same years.

Scientists from Roblox declared at first Earth to be a alternate reality but would later consider it a planet.

Due to the reality barrier being breached, a force from Earth managed to get through to Roblox.

The War of the Worlds (Earth vs. Kitaria and Kitaria Prime)

On August 10th, 2030 (Roblox would not see alien attacks until 2035) Earth would be the site of what is known to them as the "War of the Worlds" when a alien race known as the Kitarians invaded and leveled the planets major cities. They would slaughter the Earthlings and level its countries. The first country to fall would be the United States followed by Russia. China would be leveled to destroy the planet's ability to produce goods.

As the war progressed defense attempts would be made to defend the planet but would be met by the weapons of the Kitarian Race. The planet would be robbed of its valuable relics and a large amount of resources. One landmark that would be ripped down by Humans is the Golden Gate Bridge for its iron. This would be the fate of many of Earth's landmarks in a last ditch attempt to protect the planet from the invaders. The plan would fail as the Kitarian's Tripods dropped from the skies above and started laying waste to the remaining armies. Nothing could stop them as they started building assembly plants for more of their own weapons.

The planet would be covered in a thick cloud of smog as the Kitarians release the smog they collected from their planets onto the planet of attack as a way to provide themselves with cover and to harm the planet's life. After the smog cleared a bit and the Humans were heavily eradicated the survivors would be forced into being made either cyborgs or, if they were not injured, Kitarians themselves. A final message would be sent to Roblox which would arrive just before the planet was overtaken in 2034 alerting the planet of the incoming invaders:

If anyone is left out there, save yourselves. Earth has fallen. It is too late for Humans but it may not be too late for the Robloxians.

The message would however fail to reach Roblox in time for the Kitarian Invasion.