rdasisva Posted March 5, 2015 Posted March 5, 2015 GSC Extreme Steam release coming up shortly! If you already own it you may now switch your Serial Number for a Steam key from the official GSC Extreme website: http://game-stockcar.com.br/steam-key/?lang=en This is valid for purchases made from release until yesterday (February 9th). ho la key ma non capisco come bisogna attivarla su steam.
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