SA-X – Metroid Fusion

The Metroid series was creating atmosphere and tension from simple world design as far back as its inception, so when Metroid Fusion took the series on a slightly different path for a handheld game, their masterstroke was introducing the SA-X. The result of her infected Power Suit being pulled together by the mimetic X Parasites, the player is hunted throughout the game by the heartless creature with the full power of a endgame Samus. Powerless to harm the SA-X, should they hear the telltale footsteps and accompanying anxiety, the player can only run or hide throughout the entirety of the game, until the final showdown at least.