Strong emotional story and amazing multi-player shooting action!
First of all "Call of Duty 4: Modern Warfare" is possibly the best war game out there, and praise the lord its been taken out of the WWII era, it was getting done in way to many games, but I've gotta give it to "Activision" they did do it the best.
Anyway, back to the modern day, this is still the great addictive game-play you've come to know and love from "Call of Duty" and the graphics are better than before, all the different environments look amazing and feel like your in a real dangerous war-zone. Story-wise this can suck you in till its really cinematic conclusion, and when i say cinematic i mean it, the build up to it and the setup is amazing to the point that you really care for the characters and what happens to them.
My only knock against this is the really short campaign, i completed it the day i got it which took about 4 to 5 hours, but it stays completely strong through out. When you're finished with the story there's the great fun multiplayer which will take you a while to get bored of. In multiplayer you can unlock new weapons and add-ons for your guns like different Camo's and scopes by gaining XP (experience points), experience points can be gained by doing things like calling in helicopters, UAV's, air-strikes, and assisting people and getting kills. Perks can also be unlocked which are different ways to give you little advantages, for example one of my favorites is "Last Stand" in which if you are gunned down you have the chance to quickly take out your pistol and cap the guy that shot you.
So overall this is one great package with a really enjoyable campaign and engaging multiplayer.