If you're looking for a variety of weapons, enemies, and awesomeness with a dash of co-op, Serious Sam HD is where you need to be. Seriously. The latest Serious Sam HD trailer has an epic soundtrack that almost seems ironic given the style of humor associated with Serious Sam, while still complementing the visuals and gameplay shown very nicely. We also get a glimpse at the various weapons and enemies of the game, and an idea of how smooth this FPS is going to glide when you finally get your hands on it!