If you think you knew what it felt like to be the bounty hunter behind the visor, think again. The Galactic Federation's network computer, Aurora Unit, is suddenly and completely corrupted with something like a virus. The Federation believes Space Pirates may be behind the problem and are soon attacked. Samus and other hunters leap to their defense only to find that the enemy they face is Dark Samus, armed with immense power that no one can withstand.

The war initiated by Dark Samus and the Space Pirates ranges across many planets as Dark Samus attempts to corrupt each with Phazon seeds.

Use the Hypermode system and Samus' weapons – like the Power Beam, Morph Ball and Scan Visor – to explore alien landscapes, hunt for weapons and information, and destroy the seeds, all the while balancing Samus' Phazon corruption with the powers granted to her by the PED suit. Saving the planets from corruption isn't enough, though. Eventually, players must take down Samus' mortal enemy, Dark Samus, as well.

Besides using the Wii Remote and Nunchuk controllers to pull off amazing feats like aiming and blasting in midair or at a full run, players also have an array of different weapons at their disposal. In true Metroid fashion, these become powered up as the game progresses. Multiple sensitivity settings for aiming ensure that the game controls like a dream for both novice players and veteran first-person shooter enthusiasts.