Semiotically/metaphorically, the 'play' aspect is harm to his family who he's shown in to believe in No.91 that get in the way. they "interfere", and the 'work' aspect is to be spent killing his family.
No.71: Wendy tells Danny to run and hide, a more serious case of hide and go seek about to ensue.
In this image · No.50
Compare: Work Becomes Destruction
Jack’s idea of work shifts from creation toward destruction. Grady’s account of duty and correction in No.53 gives that shift its most explicit language.