Games and Prizes For a Teen Party?

I want to have the best party with people leaving saying that it was a great party, not people saying it was a dump. I have the place, it is big. It's a girl/boy party but not with that many boys. I have food and there is a big screen TV and some dancing going on, but I doubt that is going to hold them down from 6 pm till midnight.

I need games and prizes, but I don't know what types of games. They can't be to kissy because of my parents and we can't really go outside because my parents don't want people sneaking off.

I want the party to be a blast and still obey my parents rules. Can you help me?

Thank you,
Alexandra M from HI

P.S. Please post feedback quickly, I don't have much time.