- This article is about the remix of Brinstar. For other uses, see Main Theme (Disambiguation).
Main Theme (Metroid) later found its way into Super Smash Bros. Brawl on the Norfair stage with an 8-bit section and narration by Jay Ward added, much like Opening/Menu (Metroid Prime). He says: "Samus is under fire. She's sent an emergency directive: Join the fight!" Unlike Opening/Menu (Metroid Prime), this narration does not appear to have borrowed text from other sources. In Adventure Mode: The Subspace Emissary, it briefly plays before the fight with Ridley in The Research Facility (Part II); this instance cuts out the narration.
Main Theme (Metroid) returns in Super Smash Bros. for Wii U, once again playing on Norfair.
- Despite being titled "Main Theme" by the Super Smash Bros. series, the Brinstar theme is not actually considered the main theme of the Metroid series. Instead, a six-note leitmotif from Title (Metroid) serves as the series's central theme. This may be the reason why its title was changed in Ultimate.