If the serial has already been registered to another account, it will not be recognized again.
https://forums.galciv2.com/122873
3) You bought a used copy of the game.
If you (intentionally or not) bought a used copy of the game, you may receive a message when attempting to register/activate to the effect of the serial already being in use, or your email address not matching the one the game was originally registered with. Stardock will not remove an activated serial from the original owner's account and give it to you.
You have a few options in this case. You can:
- Keep the game and stick with the 1.0 version on the disc.
- Return the game to the place of purchase. Some retailers still accept returns, especially if they resold to you a returned copy that the original owner has effectively pirated (resale is prohibited by the EULA).
- Contact stardock support (support@stardock.com) and ask about pruchasing a new serial code at reduced cost.
