Comment by shagie

Consider Button Men ( https://boardgamegeek.com/boardgame/226312/button-men-beat-p... and the original https://boardgamegeek.com/boardgame/17/button-men https://web.archive.org/web/20050205124221/http://beatpeople... )

These were originally implemented as buttons that you could pin on your shirt. There was a game convention long ago where sometimes you'd find two random people wearing them have a "hey! Let's play a game" moment since it also advertised playing the game. Break out the dice that you've already got, sit down and play in a minute or two (with no weird rules you everything ran real fast).

Likewise, you could have the "this is the game" clipped on one's shirt and then playing a digital game with your selected character.