BTS: Anniversary Multiplayer
From Halopedia, the Halo wiki
BTS: Anniversary Multiplayer is a 343 Industries Behind-the-Scenes documentary video that offers a look at the developmental process of the multiplayer of Halo: Combat Evolved Anniversary. It was first released on YouTube and Halo Waypoint on August 27, 2011. The video features exclusive interviews with 343 Industries employees explaining how and why they have chosen which specific maps should be remade for Halo: Anniversary, as well as the development process for the maps themselves. Integration with Halo: Reach's multiplayer component is also discussed.