Metroid Prime 3: Corruption is a 2007 action-adventure game developed by Retro Studios and published by Nintendo for the Wii. The seventh main installment in the Metroid franchise, it was released in North America and Europe in 2007 and in Japan in 2008.

Corruption is set six months after Metroid Prime 2: Echoes (2004). The player controls the bounty hunter Samus Aran, who becomes infected with Phazon by her doppelgänger, Dark Samus. Samus works to prevent the Phazon from spreading to other planets while being corrupted by the Phazon.

The player uses the Wii Nunchuk to move and the Wii Remote to jump, aim and fire. Corruption introduces features such as Hypermode, which allows Samus to use more powerful attacks, and the ability to command her gunship. The new control scheme took a year to develop and delayed the release several times. The game was first shown to the public at the E3 2005 trade show.

Like the previous Prime games, Corruption received acclaim for its gameplay, graphics and music, though some were divided on the controls. More than one million copies were sold in 2007. It was rereleased in 2009 as part of the compilation Metroid Prime: Trilogy. Metroid Prime 4: Beyond was released in 2025 for the Nintendo Switch and Nintendo Switch 2.

Metroid Prime 3: Corruption is a first-person action-adventure game. The player controls Samus Aran using the Wii Remote and Nunchuk devices. The Nunchuk enables the player to perform actions such as moving Samus and locking on to enemies and targets. The Wii Remote allows the player to execute actions such as jumping, aiming, and firing weapons.

Corruption is an open-ended game that takes place across several planets, each with regions connected by elevators, rail systems and bridges. Each region has rooms separated by doors that can be opened when shot with the correct weapon. The gameplay involves solving puzzles to uncover secrets, jumping on platforms, and shooting enemies with the help of a "lock-on" mechanism that allows Samus to move in a circle while staying aimed on an enemy. The "lock-on" mechanism also allows Samus to use the Grapple Beam to attach onto and pull objects, such as enemy shields or certain doors. The game uses a first-person view, except in Morph Ball mode, in which Samus' suit transforms into an armored ball and the game uses a third-person camera. The third person camera is also used in conjunction with the Screw Attack power-up: in this case Samus' suit emits strange energy waves as she performs a continuous jump.

The heads-up display simulates the inside of Samus' helmet, and features a radar, map, ammunition gauge and health meter. The player can change visors to enable new abilities such as X-ray vision, collecting information on many items, creatures and enemies, and interfacing with certain mechanisms such as force fields and elevators. Corruption also includes a hint system that periodically displays on-screen instructions and navigation assistance. The game also has the addition of the Hypermode, a feature in which health is drained to give temporary invincibility and more powerful attacks at the cost of one energy tank. Hypermode will end after 25 seconds or when a gauge that indicates the left-over Phazon is depleted, but if it's filled up completely or Samus gets hit by a Phazon Grenade thrown by a Space Pirate, the player will enter Corrupt Hypermode. If Corrupt Hypermode is not stopped, it leads to a non-standard game over, due to Samus being overtaken by Phazon. Another new feature is the Command Visor, which allows Samus to summon remotely her gunship from a suitable landing site to save the game, or travel to another destination quickly. New abilities can be obtained to allow the ship to perform aerial attacks against enemy targets and transport heavy objects. In the achievement system, players can earn special credits by completing objectives. These credits can be exchanged for bonuses such as concept art, music for the sound test, and decorations for Samus' gunship.

Metroid Prime 3: Corruption takes place six months after Metroid Prime 2: Echoes. The protagonist, Samus Aran, is a bounty hunter hired to assist the Galactic Federation during its ongoing conflict with the Space Pirates. After facing defeat on the planet Zebes during the events of the first Metroid, the Space Pirates sought to gain power by using a newly discovered mutagen called Phazon, but Samus managed to disrupt their operations throughout the Prime trilogy, while the Galactic Federation confiscated and repurposed their Phazon armaments.