Variations of the games exist such as XXXtreme Ping Pong (This one is played naked) and the most popular variation No Shots Barred, in No Shots Barred the rules are simple the serve must be a regular one but as long as the ball is bouncing its still in play, even if it leaves the table.
Johnny: Yeh why not, lets make it a No Shots Barred match.
Alex: Ok Epic, let me just get the BDSM gear.
Johnny: :O WTF
Jacob: I lost a few games of Extreme Ping Pong last night...