Sorry, i have 2 keys and one of them i think was used and i not knowed which, so maybe i paste used key :D Then this key really not used: KP8GW-4Z3FD-LCR0M But i think both keys was valid until 09-23, so maybe this also may not work :/ With both keys for me steam writing "you already own this game", so i cant check if they working.

Yes, but noone reading ended giveways comments, so chance for steal was really low :D