there are seval reasons why this is a great game:
the graphics in the game are quite amazing, the movement and reactions of your character look soo natural, aswell as the skin tones of the humans and the other aliens, however, as any other game the is always difficulty making humans realistic and this game is no different, but the alians where done extremely well
the story to this game is great and it is not hard to notice why it was voted to have the best ending to any game out. the story in this rpg is based on your desions aswell as chocies made in the this game baing carried one to the next game.
in this game you can only cary 4 types of weapons, which are your shootgun,assualt rifle, sniper rifle and a pistol, but you can carry many of each and if you find anothe in one of the many boxes around the areas you can switch it and still carry the weapon, aswell as being able to carry many different weapons you can carry many different upgrades like explosive rounds or armor pericing rounds.
since i got this game several months ago i have completed it several times and have managed to complete it 100% and i would still play the game again i enjoyed it that much.