Gears of War is easily the best shooter for the 360 and keeps you playing whether your alone, with someone, or online!
The game's story revolves around a big brute known as Marcus Fenix. Marcus breaks out of jail and is sent on the mission of his life. He will fight off a large army and species known as the Locust. You will have 3 men assisting you and they will help you take down those pathetic Locust. I think the story is great, but the cut-scenes should have been better. They were short and pointless at times. Also, the last con I found about the story is that it is pretty short and will take you at least 6 or 7 hours to complete on Hardcore difficulty. Overall it was a great story mode.
Another great thing about this game is the weapons. You will have a bunch of weapons like the Hammer of Dawn or the Chainsaw Gun or the Crossbow. I prefer the chainsaw gun because if you get close enough for a melee, you will own that enemy and it is cool to just watch you tear him to bits. That is easily the game that uses a chainsaw the best. I think the weapons in this game are insane and I don't find any flaws in that.
If you have Xbox Live, you most definelty need to try it with Gears of War. It has great macthes and you can earn Acheivments by doing super good like 1,000 kills in a ranked games or something like that. It is also fun to test your skills to other gamers across the world. There are only a few online modes, but it keeps you playing for a while. I love the online play for Gears of War.
The graphics are something I wanted to talk about. This game has great graphics. Wheter it is the people, weapons, surrounding, gore, the graphics are just flawless and I really can't say anything bad about them.
The last thing that is fun in Gears of War is completing Acheivments. The total of Acheivments in Gears of War is 39. It is pretty difficult, but if check them out and make them a priority, then you will get them done soon enough.
If you have a 360, you can't go wrong with Gears of War.