They use scam games to get you to spend money. Kinda like gambling mixed with video games. They send me a message that ive won free or deep discounted stuff as a prize. I pick the three free items then here comes the you gotta spend $20 to get the free stuff. The second time i done it, the free stuff just disappeared. Games to get you to spend money and it appears each time the discounts decrease and the ammount you have to spend increases.
