Former Retro Studios developers Jack Mathews and Zoid Kirsch revealed a cut feature from Metroid Prime 2: Echoes, where the team toyed around with the idea of including the iconic Space Pirates in the game's multiplayer mode as playable characters. Metroid Prime 2: Echoes is the second entry in the subseries developed by Retro Studios after the critical and commercial success of the first Metroid Prime. Prime 2 was first released on the GameCube in 2004 and was ported to the Wii as part of the Metroid Prime Trilogy collection in 2009.