 The Adventure of Link was originally released on the Family Computer Disk System ( FDS ) before its worldwide release . Like its predecessor , the FDS version appears to be an earlier version of the game , with a few obvious differences . In the English release , the dungeons each have different colors , whereas in the FDS version they are all gray . Also , the two dungeon bosses Carrok and Volvagia ( the latter being initially named Barba in the NES release ) have different graphical appearances . The game over screen in the English version features the silhouette of Ganon from the chest up , with the text saying " Game Over / Return of Ganon " , whereas the FDS game over screen is a plain black screen with the text saying " Return of Ganon / The End " . There are some slight additions to the dungeons , as well as a handful of differences on the dungeons themselves . Due to an additional soundchip that the Disk System has , when Nintendo ported Zelda II over to the NES they had to eliminate some musical elements , especially from the title screen . On the main map , the icons denoting attacking monsters look different , but the most significant change is the spending of experience points , as Link 's three attributes cost the same , unlike the worldwide release . Further , the game is designed to promote balanced leveling , as the saved game on the disk will only let the levels for the attributes go as high as whatever is set the lowest ( e.g. if Life is at 5 and Strength is at 4 , but Magic is at 1 , then the saved game will reflect all as level 1 ) , while still saving the data regarding crystals that have been placed and items that have been collected . These differences make leveling up in the game very different . 
