You have to play shooters on at least medium if you want anything more than 5 hours. Call of duty 4 was about the same length as halo 3 maybe shorter and that was on medium. Play COD 4 or Halo 3 on hard or more and it becomes a nice 8-10 hour game as you get more of a challenge. Not sure how you where confused by multi player as cod uses a very similar lobby system. Not sure if you will play it for a long time as cod4 if you have it has a better multi player. Halo 3 was a great game for me for about 2 weeks until cod 4 came out. My friends and I played it to death during those two weeks beating over xbox live on legendary and getting all the skulls. Was really a lot of fun but they ALL picked up cod4 and just won't stop playing the multi player.







