: Once a key is used, it cannot be activated by another player. Publicly listed "exclusive" keys are almost always already redeemed or fake.
Unlike older forms of DRM, such as SafeDisc or SecuROM, which primarily checked for physical media at launch, the system used in Anno 2070 required continuous connectivity. If the connection dropped, the game would pause or fail to save progress, framing the serial number not just as a proof of purchase, but as a "license to access." anno 2070 serial number list exclusive
used a controversial "always-on" Digital Rights Management (DRM) system with a limited number of activations. Ubisoft eventually removed this strict DRM on July 8, 2020, through a universal patch. : Once a key is used, it cannot