Even the slower of my two test machines had no problem keeping up at 1024x768x32. The faster machine blazed along at 1280x1024x32 without even a burp. Almost any other engine would be overloaded by the sheer amount of action going on in most fighting sequences. Creatures are not greatly detailed, but are realistic enough for this game's purposes. The engine also does a fairly decent job rendering the other game visuals.
Maps are very simple in design, but most still look surprisingly good.
Cinematics also use the in-game graphics engine. Going into this review I wasn't sure what to expect from this game's graphics, but I was definitely surprised with the result. Another surprisingly strong feature of Serious Sam is its audio. It isn't anywhere near as good as that of Undying, but it is more than I was expecting to find. Sound effects are clear and fairly realistic.