BOTH, in different ways. If they did exactly the same thing, it would be silly to have both, right? lol....so I think games are fun, beneficial and if you win the jackpot very lucrative. Auctions also reward you for bidding in a couple of ways even if you dont win the bid upon item. Just look at the basic rules of each game or auction you are interested in and try a couple of each type and decide for yourself what makes sense for YOU. Hope this helps...