It's you against the evil Mother Brain in the thrilling battle of Metroid! You're inside the fortress planet Zebes. The planet of endless secret passageways where the Metroid are multiplying. Left alone the Metroid are harmless. But in the wrong hands they could destroy the galaxy. It's up to you to prevent the Mother Brain that controls Zebes from using the Metroid for evil purposes. But that won't be easy. You'll have to use your spacesuit to absorb valuable energy for your search to gain the use of power items like the Ice Beam, Wave Beam, High Jump Boots and Varia. If you survive, it will be you and your acquired powers against the Mother Brain.

Simple hack that allows Samus to carry all 8 of the games E-tanks. Also the low health beep has been removed.

Database match: Metroid (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: ECF39EC5A33E6A6F832F03E8FFC61C5D53F4F90B
File CRC32: A2C89CB9
ROM SHA-1: FDBFC7871962F72A1EF57E5A7E456164FB93430B
ROM CRC32: 70080810