People are collapsing, and Mebius is my ex-girlfriend?

Ling Lu traveled to the civilization before the collapse. When he thought that his life was hopeless and he was destined to become cannon fodder in the face of the collapse, the system of the [Valkyrie Development Program] suddenly appeared.
The system allows him to conquer different characters from previous civilizations in the simulated world constructed by the system, and try to lead the previous civilization to continue and survive the destruction of the collapse.
From then on, Ling Lu began his journey to become the savior of civilization in his simulation.
He cleared the ending of [Biochemical Civilization] with Mobius, cleared the ending of [The Wandering Earth] with Velvet, and reached the ending of [Interstellar] with Grayshure. He also turned the Herrscher into a chess piece with Alicia and reached the super ending of [The Great War of Civilizations].
When the simulation ended, Ling Lu had no time to sigh before the Mobius Institute suddenly sent someone to kidnap him.
What? Mebius is my ex-girlfriend? Is everything in the game real?