The Legacy Lobby is a visual, game-aware download interface within a custom Xbox 360 multiplayer GUI (e.g., for a modded console or emulator dashboard). It automatically detects which multiplayer maps, title updates, compatibility packs (e.g., for Halo 3 , CoD4 , Gears 2 ), and TU (Title Update) versions are missing for the most active community servers.
(commonly abbreviated as MPGUI) is a third-party Windows application designed to interact with modified Xbox 360 consoles. It is not an official Microsoft tool. xbox 360 mp gui download