This is like a SNES version of the NES metroid, with the consequently better (and bigger) graphics and music.
Selected notes from the author:
Item Collection: 24%. Game clear time: 34 min.
Glitches: Morphing through the platforms at Ridley. Jumping through Zebetites. Murderer Beam.
I let the friendly aliens die in the end. ;) and I didnt take Ice beam until I kill Ripley.