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Mega Man X4

From PCGamingWiki, the wiki about fixing PC games
Mega Man X4
Mega Man X4 cover
Virgin Interactive
Taiwan release AcerTWP
Release dates
Windows December 3, 1998
Monetization One-time game purchase
Modes Singleplayer
Pacing Real-time
Perspectives Scrolling, Side view
Controls Direct control
Genres Action, Platform
Vehicles Hovercraft, Robot
Art styles Anime, Pixel art
Themes Sci-fi
Series Mega Man X
Mega Man X4 on HowLongToBeat
Mega Man X4 on IGDB
Mega Man X4 guide on StrategyWiki
Mega Man X4 on MobyGames
Mega Man X4 on Wikipedia
Subseries of Mega Man
Mega Man X 1995
Mega Man X3 1997
Rockman X Math Whirlwind 1998
Mega Man X4 1998
Mega Man X5 2002
Mega Man X6 2003
Rockman X7 2004
Mega Man X8 2005
Mega Man X Legacy Collection 2018
Mega Man X Legacy Collection 2 2018
Rockman X Dive 2021
Mega Man X Dive Offline 2023

Mega Man X4[Note 1] is a singleplayer side view scrolling platform game developed by Capcom. It is the fourth main entry in the Mega Man X series.

Originally released for the PlayStation and Sega Saturn on August 1, 1997, it was ported to PC by Capcom and released on December 3, 1998, published by Media Kaito in Japan, Capcom Entertainment in North America, Virgin Interactive and AcerTWP in Taiwan.

FMV playback in the game requires the Indeo 5 codec, with alternative codec replacement available for modern operating systems. The game's installer was written for a 16-bit system and doesn't run on a modern OS, requiring workarounds such as running 32-bit InstallShield 3 software to install the game (which doesn't create desktop or start menu shortcuts for the game). The game's framerate is capped at 59 FPS.


Source DRM Notes Keys OS
Disc check (requires the CD/DVD in the drive to play)
A port of this game based off the PlayStation version was re-released as part of Mega Man X Legacy Collection.

Game data

Configuration file(s) location

System Location

Save game data location

System Location
Windows <path-to-game>\[Note 2]


In-game general settings.
In-game general settings.


Keyboard remapping.
Keyboard remapping.
Controller remapping.
Controller remapping.

Keyboard and mouse State Notes
Mouse acceleration
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller support
Full controller support
Function keys are used for video settings, and to soft reset/exit the game.
Controller remapping
Only buttons 1-8 (referred as Buttons A-H in-game) are remappable, while buttons 9 and 10 are hard-coded as "Start" and "Select" respectively.
Controller sensitivity
Digital movement.
Controller Y-axis inversion
Controller types
XInput-compatible controllers
Uses DirectInput. See Controller support to use XInput controllers.
DualShock 4 controllers
See the glossary page for potential workarounds.
Generic/other controllers
Button prompts Input settings icon - Generic Controller.svg
Additional information
Controller hotplugging
Haptic feedback
Simultaneous controller+KB/M

Controller support

A fix is required for the game to recognize XInput D-pad and analog triggers when assigning controls.
Use XInput Plus[1]
  1. Download and run XInput Plus.
  2. Set the Target Program to MMX4.exe.
  3. Go to the KeyAssign tab, click the Left Stick drop-down menu, set it to Multiple Key, then check Left Stick and DPAD.
  4. Go to the DirectInput tab, then check Enable DirectInput Output.
  5. Click Customize, then assign the following buttons:
    • Left and Right Triggers as Button 7/8, respectively.
    • Back/View and Start/Menu buttons as Button 10/9, respectively for proper in-game Start and Select placements.
    • Left and Right Stick buttons as Button 11/12, respectively.
    • And the Guide button as Button 13
  6. (Optional) Go to the Settings tab, go to Other, and uncheck Enable Init Beep to disable the start-up sound when launching the game.
  7. Click Apply to save settings and install DLLs into the installation folder.
  8. Launch the game and configure your controller from the in-game Button Config settings from the Options menu.


Audio feature State Notes
Separate volume controls
Surround sound
Closed captions
Mute on focus lost
Royalty free audio


Language UI Audio Sub Notes
Replacing voice file of 8 Maverick bosses with the same files in Japanese PC version can (partially) restore Japanese voice acting of 8 Maverick bosses.
There exists a strange variation uses Japanese logo at title screen, but the scripts and voiceover are in English (presumably released in Taiwan). Japanese vocal Opening/Ending themes from Playstation version is missing; the game uses International Opening/Ending themes instead.

Other information


Technical specs Supported Notes
Direct3D 5
DirectDraw 6
Executable 32-bit 64-bit Notes


No middleware information; you can edit this page to add it.

System requirements

Operating system (OS) 95, 98
Processor (CPU) Intel Pentium 100 MHz
System memory (RAM) 24 MB
Hard disk drive (HDD) 46 MB
Video card (GPU) DirectX 5 compatible


  1. Known as Rockman X4 (Japanese: ロックマンX4) in Japan.
  2. When running this game without elevated privileges (Run as administrator option), write operations against a location below %PROGRAMFILES%, %PROGRAMDATA%, or %WINDIR% might be redirected to %LOCALAPPDATA%\VirtualStore on Windows Vista and later (more details).


  1. Verified by User:AmethystViper on 2019-11-17