Normal ending:
Finish the game and reacch 74% or less completion
Different ending:
Finish the and reach 75% to 99% completion
Best ending:
Finish the game with a 100% completion
Samus without suit in classic Metroid ending:
Finish the classic Metroid game less than 2 hours
Unlock Image Gallery 1 option
Finish 50% completion of the research and creature data scans
Unlock Image Gallery 2 option
Finish 100% of the research and creature data scans
Unlock Image Gallery 3 option
Finish the game on hard mode
Unlock Image Gallery 4 option
Find 100% of all power-ups
Unlock Hard mode
Finish the game with a 100% completion
Fire missiles faster
With the first gun equipped, rapidly hit Y + A, then
hit Y again when the gun switch back to beam weapon mode
Unlimited health
While playing the game on any level, press L,R,L,R,L,B,Y,Z
(This cheat is not tested!)
Classic NES version of Metroid and Samus' Metroid Fusion costume:
Note: You need Metroid Fusion and the GBA link cable to do this.
Finish Metroid Fusion and save the game after connect both games
with the link cable.
