Ty

Hi there, thank you! ... Now I have a little problem: I won this game already a month ago. But the guy didnt give me the game (and first I marked it as "not received")... UNTILL now. This means in this moment i got TWO keys of this game.

So I redeemd his key and I must not take yours.
Please "reroll" this key and give it to another guy. (This option you should find in your "giveaways".)
Thank you.

PS The FAQ of steamgifts:

"What should I do if I win a game more than once, or if I win a game that I already purchased?

When this occurs, you should contact the giveaway creator and inform them you will not be accepting or redeeming the gift. Explain the situation, and ask the giveaway creator to request a new giveaway winner. During this process you should not mark the gift as "Received", or reveal the key if the option is available. This will help inform us that you are not accepting the gift, and it will prevent you from being suspended for not activating a gift you won. Once the ticket from the giveaway creator is approved for a new winner, the win will be removed from your profile."