halo 3

Halo 3
Halo 3 is only for Xbox
The game has an amazing story line that grips you the whole way through the game. The graphics get better throughout the series from Halo combat evolved to Halo 4. The game has a health bar that regenerates over time. I feel it makes it more fun. I like the way that the people I kill  have lots of blood and guts spewing out of them when I kill someone. The game is very dependent on the story and linked to the story because it means you can relate to the characters more and feel suitably negative towards the enemy. 

The story is as follows:

"In the distant past, an intellectual race called the Forerunners fought an alien parasite known as the Flood. The Flood, which spread through infestation of sentient life, overran much of the Milky Way Galaxy. One of the races affected was humanity, who went into space and came into conflict with the Forerunners. Exhausted by their war and after having explored all other options, the Forerunners conceived a weapon of last resort to combat the Flood. Using an installation known as the Ark, they built large ring-shaped megastructures known as Halo. The Halo Array, when activated, would destroy all sentient life in the galaxy—depriving the Flood of their food, after which samples of the lost lifeforms would be reseeded. Delaying as long as they could, the Forerunners activated the rings and disappeared."

'http://en.wikipedia.org/wiki/Halo_%28series%29#Setting_and_plot'

There are some negatives.  Firstly, the game its self is too hard on Legendary so that you get frustrated.  Secondly, there is little to no blood and that is annoying as a designated psycho requires  blood and guts when someone is killed. Thirdly, Legendary just didn't give much satisfaction in the first person shooter mode; i would prefer it to be free roam.