This version is identical to the original Japanese revision 3 version of Metroid, but this time it is released as a Virtual Console game for the Wii and Wii U platforms. Gameplay and storyline remain exactly the same as the original NES version.  The game's significance lies in its availability on the Wii and Wii U, making it accessible to a wider range of players who might not have played the original NES game. The release highlights Nintendo's ongoing effort to preserve classic titles and make them available to modern gamers. 

Metroid (Japan) (Rev 3) (Wii and Wii U Virtual Console)

Metroid (Japan) (Rev 2)