From its realistic weapons to tactics and communications, SWAT 4 is, as the title says, a truly unique experience. I would honestly pay a lot for this, it is a truly great game, and you don't need a good system to run it. I can run it on an all-in-one PC with an i3 and only integrated graphics. It doesn't have a storyline or anything of the sort, but it doesn't need one. It is realistic yet easy to hop into, and includes a few references here and there to Police Quest, Sierra's series mainly for MS DOS. I can't really explain it much, just get it. Get it now. It is a brilliant game.