play to the gallery

child's play

Something particularly easy or simple.

go play in the traffic

To go elsewhere and feel free to engage in risky behavior; to get lost.

grandstand play

A successful play or other manoeuvre during a sporting competition in which one or more players shows off unnecessarily in order to entertain or impress the spectators.

hold-up play

A play where an attacker retains possession of the ball, while the teammates can move up the field.

peanut gallery

Any source of heckling, unwelcome commentary or criticism, especially from a know-it-all or of an inexpert nature. May also now refer to general audience response: "Let's hear it from the peanut gallery."

play a part

To be involved in such a way to affect the outcome, to be a contributing factor.

play a role

To have an effect or influence on a situation or outcome; to contribute to something.

play all one's cards

To use all one's resources.