For those that have the PlayStation 4 and a PlayStation Plus membership, they can download the hit classic <em>Call of Duty 4: Modern Warfare<\/em> for free. This is an incredible deal for PlayStation users. This <em>Call of Duty<\/em> title is one of the more popular in the franchise and stands out in so many ways.\r\n\r\nDeveloped by Infinity Ward and published by Activision, this amazing entry in the series focuses on present-day issues of combat. Originally, this was a huge chance for Infinity Ward and the <em>Call of Duty<\/em> franchise. These games used to be so reliant on focusing on WWII battles. Despite this chance, the modern-day battlefield turned out to be the perfect arena for war.\r\n\r\nThe various weapons in this game are truly breathtaking to use. There\u2019s a good mix of light and heavy-duty weapons, as well as a wide variety of grenade options. At certain points, you even get to man an AC 130 gunship. It\u2019s a combat experience unlike any other.\r\n\r\nThe main story is a huge highlight for <em>COD 4<\/em>. It features a linear storyline, although you get to go back and forth between U.S. Marines and the British S.A.S. The interchanging storylines keep things fresh and give gamers a lot of variety. The enemies in this game are also fun to take down. You\u2019re pitted against Mid-Eastern terrorists, who are hellbent on defeating the Great Satan.\r\n\r\nAs far as the gameplay, it\u2019s pretty forgiving. If you have any history playing a <em>Call of Duty<\/em> game, this entry shouldn\u2019t put up much of a challenge. The aiming mechanics are also quite nice. They still seem pretty realistic, which is quite impressive for a game that has been out for more than a decade now.\r\n\r\nThe enemies that you come in contact with are also a challenge. Their AI mechanics have been dramatically beefed up, making certain missions no easy picnic. There\u2019s nothing better than figuring out what each terrorist\u2019s strategy is upon first contact.\r\n\r\nThe class-based multiplayer is just as great as it has been. It makes you want to continue playing, so you can get more weapons and a better class ranking. Fortunately, there aren\u2019t any specific skill classes that lock you into a certain role. You\u2019re free to engage in combat however you like.\r\n\r\nIf you haven\u2019t played <em>Call of Duty 4: Modern Warfare<\/em> yet or want to revisit it, go to the PlayStation Store immediately. It won\u2019t be available forever.