Successfully complete the game to unlock the Metroid: Zero Mission Gallery, Original Metroid, Hard mode, and Sound Test options. Note: More pictures are added to the gallery when the game is completed with different endings. Start a new game with your cleared saved game to play in Time Attack mode, with a timer at the map screen. Also, the Original Metroid may be unlocked before the game is completed. Enter the options screen at the main menu and select the "Original Metroid" option that appears after "Metroid Fusion Link".