Metroid: Zero Mission Nintendo Switch handheld gameplay. Metroid: Zero Mission takes place on Planet Zebes, a large, open-ended world with areas connected by doors and elevators. The player controls Samus Aran as she travels through the planet's caverns and environments, hunting Space Pirates. Along the way, the player collects power-ups that enhance Samus's armor and weaponry, as well as grant her special abilities. These abilities allow Samus to access previously inaccessible areas, so that the game can be played linearly or non-linearly.