The passenger reads out an event. You say where it belongs among the events already on the timeline -- after the moon landing, before Chernobyl -- and they tap that gap. Right, and it joins the timeline, which makes the next one harder because there are more places it could go. Wrong, and the round is over. Par is a streak long enough that luck cannot account for it, and the app shows the odds it used.

Players: Two or more people in the car.

Driver: Argues about dates.

The bar: A streak long enough that luck cannot account for it.