Halo has been the most important game made by microsoft becuase have a lots of fans the main character is the master chief is a soilder and the covenant was destroyed by he but te master chief was helped by the Arbiter the arbiter is an alien like a lizard and help the master chief in te end of halo 2 and all halo 3 game but in halo 4 we dont know that he is going to apear in the game