Currently Online 
Guessed by @Darashiva
Games don't really ever come any better than this.
This was a monumental step forward for the industry, a game more immersive and more cinematic than most games made since it, never mind before it. It it amazing on its own, but it also elevates the entire Metroid franchise, at the time composed of two not-so-great games, and truly feels like the climactic ending to a trilogy that didn't even matter before it, a saga it basically created on its own. The first two chapters of the trilogy becoming almost more recognizable by their brief appearances in the prologue of Super Metroid, than the actual games were.
Honestly there isn't even much to say about it. If you look up the definition of the word 'masterpiece', it's gonna say Super Metroid. I think all of us here have played it. If someone hasn't, you should fix that. And maybe replay it after that, because this game is always great regardless of how many times you've beaten it - I'd almost argue later playthroughs are even more fun than the first, because of the crazy sequence breaking and all that.
