Here is a list of idioms formed with play.
Make great play of
To make great play of something is to draw attention to it in an exaggerated way.
To play about is to behave in a casual manner.
To play along is to pretend to cooperate.
Play it by ear
To play it by ear is to proceed without having formed a plan.
Play something down
To play something down is to disguise the importance of something.
Play for time
To play for time is to use excuses or unnecessary acts to gain time.
Play into someone’s hands
To play into someone’s hands is to give someone an advantage without meaning to do so.
Play someone off against another
To play someone off against another is to bring one person into conflict with another for your own advantage.
Play with fire
To play with fire is to take foolish risks.