The Zorgons are the main villains of the 2005 sci-fi film "Zathura". They are lizard-like men, and they are just as attracted to heat (e.g. fire) as bees are to nectar. Their diet is long pig (human meat). They appear when the protagonists, Walter and Danny, are playing the game, and once one of the cards comes out saying "You are visited by Zorgons", that's when they, on their mothership, arrive to destroy the house further than Walter's robot when he became defective (according to an earlier card) and a meteor shower (according, in fact, to the first card). They do not ever speak.
Near the end, they are destroyed by Walter's robot when Walter uses the "Reprogram" card on him. However, the robot is destroyed too.