Enter Unlock Code Alien Shooter 2 Conscription Access

The old DRM system linked your code to your hardware (hard drive serial number, CPU ID). If you changed your PC’s hardware, the game thinks you are on a new computer and invalidates the code. Fix: Contact Sigma Team support directly. Provide your old email receipt and your new hardware ID (the game may display it on the unlock screen).

If the codes aren't working, check the following: enter unlock code alien shooter 2 conscription

A: Because Steam uses its own DRM (Steamworks) instead of Sigma’s legacy unlock system. The Steam version is already pre-unlocked. The old DRM system linked your code to