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.

You play as Bessie, bio-engineered weapon under the employ of the Ax, a powerful alien species that has been monitoring Earth for hundreds, if not thousands of years. They maintain their secrecy by destroying any evidence of their presence. That's where you come in.
It is your mission to travel into the Bloom Lake Research Facility and erase the data being stored in the central server. Unfortunately, this server is inaccessible without the two passcodes, each protected by powerful defense robots kept elsewhere in the facility.

Explore the BLRF in search of weapons and equipment while avoiding dangerous robots and hazards, track down the two passcodes, and find your way through the security systems to destroy the main computer.

Over the Moon is the creator's first attempt at a serious total-conversion romhack, and is based on a metroidvania idea he had for a few years about a gun-wielding alien cow. It features a brand new map, new sprites, and slightly modified gameplay (health drop values are increased, missiles are more rare and more valuable)

The main idea for OTM was to take the traditional Metroid format and remove all the boring parts: Long corridors and repetitive climbing, grinding for health, getting lost and having to backtrack, and the end result is, what the creator hopes, a much more streamlined and concise Metroid experience.

The game is fairly open-ended, with the player's choice of which areas to visit in which order, and new things to do depending on the kind of equipment the player chooses to use and in what order they are picked up.

rominfo : No-Intro Name: Metroid (USA)
(No-Intro version 20130731-235630)
File SHA-1: ECF39EC5A33E6A6F832F03E8FFC61C5D53F4F90B
ROM SHA-1: FDBFC7871962F72A1EF57E5A7E456164FB93430B
Patched File SHA-1: C245B91204285D3DB3209C29ADACF1959D6072DE
Patched ROM SHA-1: 912DA5BCC68EF1D993BD20CCFC9D50C09F58ED5E