With the marketplace's closure, the gaming community faced the reality that hundreds of non-backward-compatible games and their associated DLC would be gone for good. Xbox 360 Store and Xbox 360 Marketplace FAQ | Xbox Support
Hundreds of DLC packs are now impossible to purchase legitimately. These range from cosmetic skins for licensed games (think James Bond 007: Blood Stone ) to entire game modes ( F.E.A.R. ’s multiplayer expansions). The "Xbox 360 DLC Archive" is a grassroots movement—a combination of Reddit forums, Discord servers, and modding tools designed to ensure that the software we paid for isn't lost to licensing hell. xbox 360 dlc archive part 2