Intro Voice-overThe voice during the game's introduction, the one that says "The last Metroid... ...is in captivity. The galaxy... ...is at peace.", is none other than Dan Owsen. He is known for doing much of Nintendo's localization efforts in the 1990s. His work included translating manuals and in-game text. He is also known for his "Ask Dan" column on Nintendo's web site, and can be seen in some of Nintendo's promotional VHS tapes.
SoundtrackBecause the original Metroid used the Famicom Disk System (and its wavetable sound chip) in Japan, and the releases outside of Japan were on cartridges and thus only used the default NES sound system, the original soundtrack had to be slightly reprogrammed. In Super Metroid, the changes made by the FDS-to-Cartridge conversion back in the original game are made more apparent when the older - albeit remixed - themes are used.
The music in Super Metroid, considered to be some of the finest compositions for the SNES, was composed by Hirokazu Tanaka, Kenji Yamamoto, and Minako Hamano. Information about the CD soundtrack can be found here.
SpeedrunsSuper Metroid is, due to its level design and planning, one of the most popular games for speedruns and is still being perfected to this day.
Contributed by Big John WV (25293) on May 28, 2009. [revised by : Cantillon (12935), Jeremy Johnson (638) and Patrick Bregger (98690)]. -- edit trivia