: You can often re-enter or update a key directly in the in-game menu under Multiplayer Options -> Enter CD-Key .
A (also known as a serial key or activation code) is a unique alphanumeric string used to authenticate your copy of the game. For Call of Duty: United Offensive , this key was originally printed on the back of the manual or a sticker inside the physical jewel case. cod united offensive cd key
: You can buy the game directly from the Steam Store for roughly $19.99. : You can often re-enter or update a
: Keys from physical retail copies generally cannot be redeemed to activate the game on Steam . Where to Buy cod united offensive cd key
If you purchased the game digitally on platforms like or GOG (Good Old Games) :
