Metroid Prime 2: Echoes is a 2004 action-adventure game developed by Retro Studios and published by Nintendo for the GameCube. The sequel to Metroid Prime (2002) and the first Metroid game with a multiplayer feature, Echoes was released in North America, Europe and Australia in 2004 and in Japan under the name Metroid Prime 2: Dark Echoes in May 2005.

The GameCube is a home video game console developed and marketed by Nintendo. It was released in Japan on September 14, 2001, in North America on November 18, 2001, in Europe on May 3, 2002, and in Australia on May 17, 2002. It is the successor to the Nintendo 64 (N64) and the predecessor to the Wii. As a sixth-generation console, the GameCube primarily competed with the PlayStation 2 and the original Xbox.