You can enter your user name and password instead of a key code or you can find the codes for all the games you purchased by going to your account and looking at your purchase history or on the left side of the screen there is a link to get all of your unlock codes. I believe you are allowed to install any game you purchase on 3 computers. It might be only 2 but I believe it's 3. Good luck gaming and have fun!!!

Dear MGXSD:  If you don't want to answer someone's question, why don't you just move on by and do something else. The point of Tips is to help each other when we get stuck in a game. It is NOT the purpose of PlayFirst membership to be abusive to others.  I hope you never need help with a game. I personally know what it's like to buy a game and then get stuck and can't move forward. It can be very frustrating. I know it would be nice if we could all be as smart as you and as good at games as you, but we're not. So you will just have to put up with us.  You know, they make a variety of games because different people like different games. If we were all the same, the world would be a very boring place. Anyway, maybe next time you get the urge to go off on someone you could just leave the PlayFirst site and go and do something else. Good luck to you.