WE basically made up this chugging game. its for 2+ around 3-4 people work the best.
you need 2 beers to play. I will give an example of 3 people.
 3 people have 1.5 beers in thier cup, and the additional (0.5 each)(3 people)= 1.5 goes to a new cup. Everyone chugs, loser has to chug the additional cup.
That is just purly an ego game, and claim, i can run the show.
but i love playing beruit and flip cup and kings as well, and thumper is a good one too.