How long could you go without learning who won the Super Bowl? “Last Man in America to Know Who Won the Super Bowl,” or better known as Last Man is a game played after the Super Bowl champion is crowned.

“Knowledge Runners,” a.k.a. contestants try to avoid learning “The Knowledge” – the outcome of the Super Bowl for as long as possible. That is all there is to it. Once you learn either the winner or the final score of the big game you are out. The game is played on the honor system and you can participate by tweeting.

Last year, 16% of contestants learned who won the Super Bowl by midnight on Sunday and more than half were out by the end of Monday after Super Sunday. According to the website there are still 21 “Knowledge Runners” that don’t know the Broncos upset the Panthers to win Super Bowl 50. Oops, spoiler alert!

This is one way to take part in the Super Bowl festivities, but a better option is prop bets!