Their prophecies foretold Samus' arrival, and they left abilities to help her defeat the source of the Phazon. The Chozo contained the source of the Phazon, and the survivors left the world. She discovers that the Chozo once settled on Tallon IV, and their disappearance, and the emergence of Phazon, is due to an interstellar object crashing on the planet. Samus receives a distress signal and travels to Tallon IV to stop the Space Pirates from exploiting the substance known as Phazon.

After receiving a Fully Powered Suit from deep within the ruins of Chozodia, she steals an Escape Ship from the Space Pirate Mother Ship, after triggering its self-destruct sequence with the elimination of the Ridley Robot. Stripped of her Power Suit and her Starship destroyed, she is forced to infiltrate the Space Pirate Mother Ship in order to find another way off the planet with only her Paralyzer for protection. In Metroid: Zero Mission, it is revealed that afterwards, Samus is ambushed by Space Pirates and her Starship crash-lands back on the surface. She confronts the cybernetic lifeform Mother Brain, as well as its guardians, Kraid and Ridley. Samus travels through the caverns of the planet Zebes to stop the Space Pirates from exploiting the Metroid species for galactic domination. Metroid and Metroid: Zero Mission (NES/Game Boy Advance, 1986/2004) Samus' origins are told in the manga including the attack on K-2L, her training with the Chozo, her brief time in the Galactic Federation and other such events leading up to her confrontation against Mother Brain during her Zero Mission. Metroid: Volume 1 and Metroid: Volume 2 (Manga, 2003/2004)

12 Metroid Dread (Nintendo Switch, 2021).

11 Metroid Fusion (Game Boy Advance, 2002).

8 Metroid II: Return of Samus and Metroid: Samus Returns (Game Boy/3DS, 1991/2017).

7 Metroid Prime: Federation Force (3DS, 2016).

6 Metroid Prime 3: Corruption (Wii, 2007).

5 Metroid Prime 2: Echoes (GameCube, 2004).

2 Metroid and Metroid: Zero Mission (NES/Game Boy Advance, 1986/2004).

1 Metroid: Volume 1 and Metroid: Volume 2 (Manga, 2003/2004).

Prime os mainline