Left near dead by an attack from the X parasite, Samus is saved by a vaccine made from Metroid DNA, the X parasite's only natural predator. Now a weakened Samus must exterminate the X as it spreads chaos through a research station orbiting planet SR388.
 
As you explore this deadly facility, collect classic power-ups like the Screw Attack and Wave Beam to grow stronger. Just be warned because the X parasite can mimic the abilities of what it infects including Samus! If you see a creature called the SA-X, perhaps you should run...
 
In Metroid Fusion, you'll experience classic Metroid gameplay as you explore secret passages, master Samus's moves, and (hopefully) put an end to the X parasite menace.