METROID II 2: RETURN OF SAMUS GAME BOY GB

It's the sequel to the hugely popular Metroid for the NES. In Metroid 2, you control Samus Aran on her quest to rid planet SR388 of Metroid parasites. After killing the space pirate Mother Brain in the original Metroid, Samus must embark on this adventure to stop the Metroids from multiplying throughout the galaxy. Samus soon discovers that the Metroids have mutated, making them much harder to defeat.