Neoterra is an artificial planet and a replica of Earth in the Sol System. It was made in 2175 using anomalous energy after the industrialization of Mars caused another climate crisis.
Since its creation, Neoterra was an incredibly unstable planet. While there was very little major geological or climate events, there were frequent paranormal occurences that made life on Neoterra tense.
By 2251, Neoterra was home to 1.5 billion humans until it disappeared in 2252, leaving only disaster in its wake. This is now known as the Neoterra Extinction Event.