I recently discovered an email (originally sent on the 20th of december 2013 after purchase of gtx 760) by a retailer Informing me of a pack of free games, Including Splinter cell blacklist and assassins creed black flag. I am wondering if these game codes are still valid? I visited the site and got the codes for the games but I haven't tried redeeming them because If they are valid I plan on trading/selling them.