Like the title says, I bought Half Life 2 at a gaming shop near where I live, and everything worked lovely. It installed, but when I tried to play it, Steam requested the Serial Key I already put in, I did it again, and it came up, Error Duplicate Code already entered...
I looked inside the case, and found a preowned sticker on the front of the manual. I didn't see it at first because the manual was put in backwards. What I think's happened is that someone bought it, installed on Steam, then sold it. If so, have I just wasted £12 of my very valuable money, or is there a way to use the disk to play it. It's unfair that I waste £12 on this, and if it is useless, it's unfair that gaming shops sell items they know could be useless...
I have a shot of the case, to prove I'm not trying to get serials to pirate it or something, I'm really hoping for some advice on this please:
Violence isn't the answer, it's the question...