cdv Software Entertainment has released a new gameplay movie from Serious Sam HD, showcasing the enhanced version of the first Serious Sam game developed by Croteam. Powered by Serious Engine 3, Serious Sam HD stays true to the source material, as the hero takes on Lord Mental's forces across a variety of battlegrounds set in various ancient civilisations. The game will be available for PC on November 24th and for Xbox 360 during December 2009.