Metroid Prime is a first-person action-adventure video game series developed by Retro Studios and published by Nintendo. It follows bounty hunter Samus Aran as she explores alien worlds, uncovers ancient mysteries, and battles dangerous lifeforms and hostile forces. The series is known for its atmospheric exploration, environmental storytelling, and blending of combat with puzzle-solving. Metroid Prime 2: Dark Echoes is one installment in this larger series, but the main/master title is Metroid Prime.