AKA Metroid 3, an SNES game. Like previous installments, there is an emphasis on exploration, and finding power-ups to help in battle and enable further exploration.
Super Metriod (also titled Metroid 3 in-game) is an 1994 SNES side-scrolling action platformer, with a heavy emphasis on exploration and character improvement through power-ups. The upgrades frequently make exploring new areas possible, and while several games have exercised the individual concepts before, including it's predecessors on the NES and Game Boy, Metroid and Metroid 2: The return of Samus. However, Super Metroid was one of the first to bring them all together with face-paced gameplay and a high level of polish.