Because the game is no longer commercially available or supported by the publishers, it falls under the category of "abandonware." Sites dedicated to preserving old PC games often host pre-patched versions of Battle Los Angeles that require no activation codes at all. Important Safety Warning Regarding "Free Code Generators"
Click in the top menu, then select Activate a Product on Steam . Enter your activation code. battle los angeles pc activation code
: Open the Steam client, click "+ ADD A GAME" in the bottom-left corner, and select "Activate a Product on Steam..." . Because the game is no longer commercially available