Get a circular table, and two packs of two different colored cups.Red and blue for instance. Line the cups around the edge of the table every other color ( Red, Blue, Red, Blue ). One team is red, the other is blue. Bouncing may be necessary when applicable. Which makes it harder in some cases. 
 
All rules mentioned in a regular game of beer pong goes from there on. IE: Balls Back, Bounce Swat, Double Shot…etc… 
 
 
 
Enjoy…
(Thanks Stephen!)