This game is so great because of the fact that it has the great story and adventure of the super soldier Master Chief. (Except Halo 5 which was terrible) They consists of halos 1,2,3,4, which all about master chief and some development of the Arbiter. There is also halo Reach which is the leading events to halo 1 and there is ODST which is events around halos 2 and 3. Each of the stories are super good and the game is very creative and has good design (even for some of the games being 10-20 years old) The master chief story still continues with the production of halo Infinite on the way. Plus there is a good multiplayer with 100s of different games to play.