The listing, [STEAM KEY] Particula has ended.
[STEAM KEY] Particula
Steam key (activation code) for winner of this auction via Listia message.
About steam: https://en.wikipedia.org/wiki/Steam_(software)
Download Steam Client: http://media.steampowered.com/client/installer/SteamSetup.exe
How to activate Steam Keys/CD-Keys: https://support.steampowered.com/kb_article.php?ref=5414-TFBN-1352&l=english
If the winner claims it is a wrong key or the key is not working or the key is duplicate he/she must provide a proper prove to that (screenshots from activation page and Steam account details). Screenshots must be original, not edited, showing desktop with data and time (PC clock).