She goes there in order to eradicate them all (
because of the Space Pirates using them as weapons), but ends up sparing just one of them: the infamous «baby» (an infant Metroid), who saves her at the end of Super Metroid.
Not exact matches
Attacking cargo ships can naturally be a little hit or miss in terms
of loot, but naturally you can then hurtle over to a
space station and sell your
pirated goods,
because apparently nobody was looking out the window when you were busy shooting stuff up.
It is one
because it takes the story
of the NES game, where Samus is sent to her former home planet
of Zebes to eradicate the Mother Brain and stop the
space pirates from breeding those brain - sucking metroids.