There were lots of different multiplayer modes of Call of Duty: Advance Warfare in both online and offline version of this game. The publishers decided that they are going to merge everything in one place and that is exactly what they did.
There were multiplayer modes such as team death match, search and destroy and etc. which are now in one mode.
If you have recently downloaded COD: Advance Warfare then you must already have this change in your device. If you don't find it available in your game, simply update your game and you will be able to see this option.
