Effectively, you and pretty much everyone present are not playing so much as being together while nominal play is happening.
Coined by Walt Freitag in 2004, Zilchplay (split from Understanding: the "it")
Dust-storm warning: In The Provisional Glossary (2004), I described it as A type of Simulationism by default, because in the absence of a desire to actively pursue a Gamist or [[Narrativist agenda the only focus is on exploration. This was grossly incorrect.
Much better: 2006 HERO System, M&M and assessing incoherence