Spend $X on anything on the website, get $X in free Rio Grande promo games! (including Dice Realms!)

This appears to be a legitimate promotion where customers receive free promotional games from Rio Grande, including Dice Realms, when they spend a certain amount on the website. The value of the deal depends entirely on the unspecified amounts of X and the retail value of the promo games, making it a decent but not exceptional offer without more details.