Can I buy the game second hand?
No, you cannot buy the game second hand. The game will be registered to the person’s Steam account who first bought the product and cannot be registered to a new Steam account. This means that if you buy the game second hand you will not be able to play the game. Please do not buy the game second hand as we cannot assist you with this problem and we cannot give you a new CD key. Valve will also not offer you a new CD key. Our best advice if you have already purchased the game is to return it to the shop where you bought the game and ask for your money back, explaining that the game is unplayable as a second hand product.