To add to what johngie has already said, the free games do change. There will be new ones added, replacing a current free game. As long as you check-out with the free games in your cart (you don't have to immediately download them) they are yours to keep as long as you stay subscribed to Playstation Plus. For $50 a year it's a great deal, the six free games coming in the first Plus update are worth more than that. Also if you ever decided to get a PS3 you would get those Plus benefits also.