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Mega Man X3 - Zero Project V4.0 (Base Mod)

Hack of Mega Man X3


Note: The project comes with a separate .txt inside for the new locations of many RAM values used in this project since most of the original Game Genie codes used will no longer work due to vast amounts of location changes. Use this file for various cheating needs.

A large modification of Mega Man X3 that allows Zero to be fully playable. Among this, there are vast improvements over some aspects of the original game along with a plethora of new features such as a Save/Load system. Also, the game has been modified to be ‘FastROM’ as well so some slow down has been reduced, but it’s still prevalent throughout the game.

This version is considered separate from the original Zero Project since this one has such an entirely rewritten system from the ground up and separate features that people may or may not like compared to the prior version.

The project comes with four separate patches:

  • Unheadered for an unheadered ROM
  • Headered for a headered ROM
  • Unheadered with Zero sub-weapon colors (Uses X’s) for an unheadered ROM
  • Headered with Zero sub-weapon colors (Uses X’s) for a headered ROM

This is so all grounds are covered for mistakes on patching minus the wrong ROM.

ROM / ISO Information:

  • Country USA
  • File MD5 CFE8C11F0DCE19E4FA5F3FD75775E47C
  • File SHA-1 B226F7EC59283B05C1E276E2F433893F45027CAC
  • File CRC32 FA0FE671
  • ROM MD5 CFE8C11F0DCE19E4FA5F3FD75775E47C
  • ROM SHA-1 B226F7EC59283B05C1E276E2F433893F45027CAC
  • ROM CRC32 FA0FE671
  • Mega Man X 3 (U).smc




ContributorType of contributionListed credit
Metalwario64GraphicsMiscellanous palette and sprite updates also Zero's GET WEAPON image

User Review Information

The QoL changes alone do wonders

Reviewed By: gamedominator06 on 15 Jan 2019

It’s rare that I’ve felt the need to comment on hacks. I’ve only felt compelled in recent times to either a) apply small quality of life hacks to already good games (SMAS, Super Metroid, ALTTP) or b) take on the few true diamonds of amazing hacks that provide a brand new game to romp through. It’s been immensely pleasing to see many users coming to the aid of the X series to polish some of the roughest but most promising games in the series, namely this, X5, and X6.

And I’m even more pleased to say that, while many of X3’s other overarching issues don’t get tackled here, this project truly brings out some of the best in X3. The creator took a lot of time and care not only making Zero fully playable but providing clear distinctions between him and X. Don’t mistake this as just a Zero hack! The changes to X’s armor functions, especially his double buster shot, do wonders to smooth out the flow of the game. The implementation of X2’s combo system, while a bit overpowered, makes combo shots with both X and Zero super satisfying to use. The change to ride armors where they’re immediately usable upon obtaining one dramatically cleans up the vanilla game’s awkward and annoying item collection structure. It’s all enough to make for a far more enjoyable game.

Many of X3’s understandably trickier issues like enemy variety, terrible damage scaling early to mid game, and lackluster level design aren’t addressed but as something meant to be a base for future hacks, it’s never something I expected of it. The most important thing it accomplishes is making X3 a fantastic game to play. It’s one of the most well-rounded hacks out there and one of the best qualifiers for the Improvement category on here if you ask me.

Version 4.0 Recommended - Yes

User Reviews
The Definitive X3 ExperienceG30FF30 May 20194.0Yes
Awesome!KaiserHelder12 May 20194.0Yes
The QoL changes alone do wondersgamedominator0615 Jan 20194.0Yes
Undoubtedly THE best version of MMX3!phantom_with_a_rose18 Dec 20184.0Yes
The Definitive VersionTrisma12 Aug 20184.0Yes
Great update to a great hackthecowwarrior29 Jul 20184.0Yes
The DEFINITIVE version of MMX3 hands down!star_scream164628 Jul 20184.0Yes
Replace your copy with thisParkerMcFly26 Jul 20184.0Yes
Undoubtedly The Hack of the Year, 2018Eldrethor23 Jul 20184.0Yes