You now have custamisable rules built it (kinda like promod for cod4), explosives are less powerfull, gameplay is more objective oriented, pointstreak rather then killstreak encourages palying rather then camping, kill collect gametype is all about run and gun. These are just a few of the new changes, spec ops look fucking awsome and singleplayer as always will be epic. Far as im concerned it will be a great game, saying that after completing singleplayer and spec ops, after a week of multiplayer I will more than likely go back to cod4