The enemies you will meet in this game do not just look good; they look amazing. Wait, that's not all! They come in the hundreds! Even by

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playing Doom 2 on hardest difficulty you wouldn't meet that many monsters as in Serious Sam. Now combine the nice look and quantity with very acceptable system requirements. Have in mind however, that there is zero artificial intelligence in those technical monster brains - they just attack you whenever they see you. Except that the authors took care of you not trying to escape, you always get trapped into a specific zone and until you kill all monsters there, and you can't progress. I can say this is sometimes boring, but most of you will enjoy killing hordes of attacking monsters.
The levels are also very interactive. There is nearly nothing you can't destroy if you have the needed arsenal. There are lots of enemy types, so you won't get bored. My favorites are the bulls that throw you around like a soccer ball. You should see for yourself.