Metroid Prime 2: Echoes Bonus Disc

The Metroid Prime 2: Echoes Bonus Disc was a preview demo for Metroid Prime 2: Echoes on the Nintendo GameCube. The game contained trailers, an up-to-date history on all of the announced Metroid games, as well as concept art from the Prime series, and a demo featuring a remixed room layout (compared to the final released game).

The disc was mailed to those on Nintendo.com who registed enough games, and was later bundled with Metroid Prime in new packaging. This new set was then bundled with GameCubes later on.