All Available Season All Season Specials Apr, 2011 9 episodes 0.0 Season 1 Jun, 2010 10 episodes 0.0 Season 2 Feb, 2011 12 episodes 0.0 Season 3 Aug, 2011 12 episodes 0.0 Season 4 Feb, 2012 12 episodes 0.0 All Stars May, 2013 12 episodes 0.0 It is an all-star season with all competitors returning from prior seasons.
