I don't mean just playlike.

Others have retired from tournament playlike Charles Goren and Sam Fry Jr.

Cats under the influence of catnip may engage in activities related to the sexual response, such as rubbing and rolling; the playlike response, such as leaf chasing, batting and tossing, and hunting or feeding behavior.

It was V. S. Pritchett who observed that Turgenev's "Fathers and Sons" was "carefully planned in playlike fashion," telling us in intimate detail about an irreconcilable conflict between generations and philosophies.