Their house, their rules, if you don't like it, just walk out the door and take care of yourself.
My question though, is how bad of a relationship do you have with your parents that you're actually looking into laws about the leverage between you, and to what end? Would you sue your parents while living in their house to have a PS3 back because you didn't want to do chores? That seems pretty damned petty to me, and for your sake I hope it was just your curiosity that drove you to study the laws surrounding the situation.