Play

Play by the rules
If you play by the rules, you behave in a fair and honest way with people.
"You can trust him, do't worry. He always plays by the rules."

Play footsie
If you play footsie with somebody, you touch their feet lightly, especially under the table, to show your interest.
"Pete says they were playing footsie at the office Christmas lunch."

Play the gallery
A person who plays to the gallery tries to gain popularity by behaving in a way that will appeal to the majority.
"It's no secret that he got elected by playing to the gallery."

Play the game
If you play the game, you accept to do things according to generally-accepted customs or code of behavior.
"Not all website owners play the game. Some download content from others without permission."

Play truant
To stay away from school on purpose, without permission ; play hooky

Play havoc
If someone or something plays havoc, they cause disorder and confusion.
"The floods played havoc with the construction work."

Play hooky
To stay away from school on purpose, without permission ; play truant