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VARIOUS HINTS
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¯ Image Galleries:
    Gallery 1:  50% of the research and creature data scans
    Gallery 2:  100% of the research and creature data scans
    Gallery 3:  Complete the game under hard difficulty setting
    Gallery 4:  Find 100% of all power-ups (does not include the Log Book)

¯ Hard mode:
  You must successfully complete the game to unlock the hard mode.

¯ Alternate ending sequences:
  There are three different ending sequences:
    74% or less:  normal ending sequence
    75% to 99%:   better ending sequence
    100%:         best ending sequence

¯ Metroid Fusion (GBA) bonuses:
  You need the game "Metroid Fusion" for GBA, a Game Boy Advance and a link
  cable. Connect both together, complete a game and save it.
  - Classic Metroid Game:    Complete Metroid Fusion
  - Metroid Fusion costume:  Complete Metroid Prime

¯ In-game reset:
  Hold START + B + X for two or three seconds during game play.