For me the most impressive thing about the way the game looks is partly down to clever level design and quality background images, all the maps seem to have real depth with buildings or trees stretching out into the distance, you certainly don't feel like your running around bland little corridors while playing Serious Sam, it's not a dreadful system hog either, it would seem to chug along nicely even with dozens of bad guys chasing you, which is a good thing as it's somewhat common to have rather a few enemies on screen at once.