Hello how may I help you? How do I play catch? do you have already your opponent? Yes I have my two sons and they want to play good, happy family indeed How do we start and how do you win or lose at this game? two or more people should toss an object, usually a ball, between yourselves at an indeterminate time Okay I toss the ball to my youngest son and he tosses it to his brother, Then they toss it back to me, good game.. thats how it should be played Is there any rules about dropping the ball? no.. just simple as that