So recently my old pc finally died. And this forced me into getting a replacement, sadly i was unable to get anything from my old pc to my new pc. And i had sins trinity on it. And i recalled someone saying it linked with your steam account or something so i thought nothing of it. I got my new pc and tried to locate sins on steam and wasn't able to. So i went to basics i got the case, and opened it to sadly find no cd inside. I have the serial code ofc. Is there anyway to get the game and enter my code? Or do i need to buy it again?