I just bought the PC retail box for BIA:HH at GameStop.

Cannot locate any serial number/key anywhere in box, not on manual.

Is a serial number/key required for this game to install / play, for PC?

-- Seattle

Did you install it? Did it worked?

You see, no serial needed.

My retail copy from Game store in England had number on manual.
Howeer the install program has not asked for the number and the game runs WITHOUT the cd in the drive.
I'm running Vista with SP1

Yeah multiplayer doesn't ask for key either what's the point of it.