The game - Steins; Gate - PlayStation Portable | PSP

A "true sequel" to the original game. The action will unfold in the timeline "Beta", where Okabe gave up trying to save Kurisa. He returns to normal life, but is haunted by memories of other lines and Kurisu's death.

Okabe is asked to help test the Amadeus system, which is still under development. You can upload people's memories into this system, and yes, Kurisu was already uploaded there before her meeting with Okabe...