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Project ZM

Hack of Metroid: Zero Mission


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Project ZM is a work-in-progress vanilla+ hack for the North American (U) Metroid Zero Mission ROM. It is designed to fix errors add new gameplay routes, tricks and mechanics.

Patch Options

  • Enable unknown items – Separate patch. Samus’ suit is now compatible with unknown items, right from the start!
  • SM controls – Choose between GBA and SNES controls in the options menu.

Aesthetic changes

  • Redesigned minimal HUD and Font
  • Power bombs are yellow

Gameplay changes

  • Super Metroid style item grabbing and equipment toggling
  • Walljump with spacejump – You can now walljump when you have spacejump or space + screw attack.
  • Fusion style R-shot – Fire a charged shot without interrupting a spinjump by arming explosives
  • Faster shinespark recovery and walljumping – When samus sparks into something, she recovers faster.
  • Suitless spacejump in liquids – You can spacejump in liquids without the gravity suit.
  • Enemies do not get stunned in hard mode
  • Ridley and Mecha Ridley are more difficult
  • Improved physics
  • Faster room transitions
  • Mid-air ballsparking
  • Shinespark steering
  • Initiate speed booster in Morph ball
  • Charge beam sucks in enemy drops

World design changes

  • You start the game in Crateria.
  • All enemy drops have been doubled.
  • Low% is now as low as 4%. (Morph, bombs, Ice beam, missile tank)
  • All unknown items and power grip can be skipped.
  • A bunch of rooms were changed to make low% without power grip possible.
  • Perfect stealth is humanly achievable.
  • There is a new way to skip mua and zipline activation, but it has its own set of challenges… (Hint: It’s in a secret room)
  • The black space pirates are now weak to any beam. Plasma beam is not required.
  • Hard mode and Time attack mode are always available.

ROM / ISO Information:

  • Database match: Metroid - Zero Mission (USA)
  • Database: No-Intro: Game Boy Advance (v. 20180816-092117)
  • File/ROM SHA-1: 5DE8536AFE1F0078EE6FE1089F890E8C7AA0A6E8
  • File/ROM CRC32: 5C61A844




ContributorType of contributionListed credit
Captain GlitchHackingASM and Hex tweaks
biosparkHackingMAGE, ASM, Hex tweaks

User Review Information

Good changes

Reviewed By: MattKimura on 10 Jul 2020

Very solid improvement hack without affecting the core gameplay much in intrusive ways. I’m just a casual player who doesn’t speedrun games but I can appreciate some positive tweaks. Here’s some things I liked and didn’t like.


  • Auto charge. I find it really useful and non bothersome for the most part as it allows me to use something I barely used before because I didn’t want to continuously hold B the entire game. It also allows for drawing in items easier which is another cool feature. I absolutely loved it during the zero suit samus segments. Having it enabled for these parts is a must, definitely keep this feature. I never used to use the charge shot during these parts.
  • Super Metroid item grab. This is much more quicker than waiting for the menu to popup to show me pointless information. The initial popup is enough.
  • harder bosses. I got destroyed by Ridley on normal difficulty, but I enjoy the challenge. Kraid was also hitting me left and right, bouncing me around. Mecha ridley was damn annoying to defeat but I mastered it the second time. Im just glad they aren’t pushovers anymore.
  • Starting off on crateria by the ship. This makes a lot of sense since it shows how samus arrived in brinstar. It’s a good choice I’d say, nothing I’m against.


  • Auto charge, again. I found some parts of the game very frustrating because of it. There was a moment I wanted to freeze an enemy and then jump on it. But I end up somersaulting into the enemy and killing it (Happened in the middle of Ridley). Another thing is it’s hard to freeze enemies without killing them with a full charged shot. I had to get myself to hold B to stop the charge altogether. So the auto charge does have its annoying moments.
  • Super Metroid Controls. For the most part they work great, but holy hell it made the Metroids so much more difficult! Having to swap between ice beam and missiles is way more difficult and they latch onto me before I can manage to switch. It was a terrible experience. I’ll stick to the default controls.
  • Faster room transitioning. As much as it speeds things up, it kinda takes away from the original feel of the game. The screen transition is iconic in this game. I understand that speedrunning is the main concern for hacks like these. The inclusion of an optional patch to restore it would be nice. Overall the more optional patches you include, the better. Just need a folder called optional patches and it won’t clutter up the main patches. Then everyone wins! This is a very minor con, but I still like the original transition better.

All the other changes are fine and don’t concern me, like the shinespark and physics changes. Im not a speedrunner nor do I go for 100% so they dont affect me. About the auto charge, I suggest making that into an optional patch. Really looking forward to where this project will go next in the future!

Version 0.7.1 Recommended - Yes

User Reviews
It works!Pethronos13 Jul 20200.7.1Yes
Good changesMattKimura10 Jul 20200.7.1Yes
Very Fun! Found a Glitch Where I got Power Bombs EarlyRekka14 May 20200.6.4Yes