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X-COM: Apocalypse

From PCGamingWiki, the wiki about fixing PC games
X-COM: Apocalypse
X-COM: Apocalypse cover
Mythos Games
Current 2K Games
Release dates
DOS July 15, 1997
Windows July 15, 1997
Windows (DOSBox) September 4, 2008
Monetization One-time game purchase
Modes Singleplayer
Pacing Turn-based
Perspectives Bird's-eye view, Isometric
Controls Point and select
Genres Strategy
Themes Sci-fi
Series X-COM
X-COM: Apocalypse on HowLongToBeat
X-COM: Apocalypse on IGDB
X-COM: Apocalypse guide on StrategyWiki
X-COM: Apocalypse on MobyGames
X-COM: Apocalypse on Wikipedia
X-COM: UFO Defense 1994
X-COM: Terror from the Deep 1995
X-COM: Apocalypse 1997
X-COM: Interceptor 1998
X-COM: Email games 1999
X-COM: Enforcer 2001
XCOM: Enemy Unknown 2012
The Bureau: XCOM Declassified 2013
XCOM 2 2016
XCOM: Chimera Squad 2020

X-COM: Apocalypse is a singleplayer bird's-eye view and isometric strategy game in the X-COM series.

General information

UFOpaedia - A huge wiki for the XCOM series
StrategyCore Community Discussions for game series Support Page
Steam Community Discussions


Source DRM Notes Keys OS
Disc check (requires the CD/DVD in the drive to play)
Gamesplanet logo.svg
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Still, technically, has CD Check enabled. See Issues fixed for disabling it. Pre-packaged with DOSBox.
Green Man Gaming
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Humble Store
Included in X-COM: Complete Pack, with X-COM: UFO Defense, X-COM: Terror from the Deep, X-COM: Interceptor and X-COM: Enforcer.
Icon overlay.png
Icon overlay.png
Still, technically, has CD Check enabled. See Issues fixed for disabling it. Pre-packaged with DOSBox.
GamersGate (unavailable)
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A free demo version is available from

Essential improvements

Run in DOSBox

To improve DOSBox performance, make some changes to the DOSBox configuration file.
Change DOSBox configuration file[1][2]
  1. Change fulldouble=false to fulldouble=true
  2. Change output=surface to output=opengl
  3. Change memsize=16 to memsize=64
  4. Change blocksize=X to blocksize=4096
  5. Change prebuffer=X to prebuffer=20
  6. Change rate=X to rate=22050


If you still suffer from poor performance, try changing cycles=auto to cycles=max.
You may need to use Ctrl+F11 and Ctrl+F12 to control the speed of DOSBox's emulation.

Recommended Mods

  • A Patcher: Fixes bugs and can unlock incomplete parts of the game. Effectively XcomUtil from earlier games remade for Apocalypse.
  • RoadWar: Rebalances the vehicle combat, adding more game emphases to it.
  • Karadoc's Apoc Mod: Rebalances tactical missions, can make the both more fair and challenging.
Additional mods and other files for Apocalypse can be downloaded at StrategyCore here.


An open source reinterpretation of the game's engine that's currently in a pre-alpha state.

Further details can be found on the project's official website, GitHub repository, and project forums.

Game data

Configuration file(s) location

System Location
Windows <path-to-game>\[Note 1]
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/7660/pfx/[Note 2]

Save game data location

System Location
Windows <path-to-game>\SAVEGAME[Note 1]
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/7660/pfx/[Note 2]

Save game cloud syncing

System Native Notes
GOG Galaxy
Steam Cloud


In-game options menu.
In-game options menu.

Graphics feature State Notes
Widescreen resolution
4K Ultra HD
Field of view (FOV)
For DOSBox toggle with Alt+ Enter (see the glossary page for other workarounds).
Borderless fullscreen windowed
See the glossary page for potential workarounds.
Anisotropic filtering (AF)
Anti-aliasing (AA)
Vertical sync (Vsync)
For DOSBox use an unofficial build (see the glossary page for other workarounds).
60 FPS and 120+ FPS


Keyboard and mouse State Notes
For DOSBox use the DOSBox Mapper (see the glossary page for other workarounds).
Mouse acceleration
Mouse sensitivity
Mouse input in menus
Mouse Y-axis inversion
Controller support
For DOSBox use the DOSBox Mapper (see the glossary page for other workarounds).


Audio feature State Notes
Separate volume controls
Surround sound
Most speech is text-based.
Closed captions
Mute on focus lost
For DOSBox change the priority background value in the DOSBox configuration file.
Royalty free audio


Language UI Audio Sub Notes
Use the Unofficial German Language Pack.
Brazilian Portuguese
Retail only: BraSoft.
Fan translation by «» download link #1 and #2
Use the Apocalypse Spanish Patch.
  • The russian version features a fandub with alternate music.
  • All officially released versions of Apocalypse, i.e. English, German, Italian, French, Spanish, Polish, Chinese, etc. feature a fully translated game and voiced video sequences.


Multiplayer types

Type Native Players Notes
Local play
Hotseat. Was scrapped prior to release but can be enabled using A Patcher. Works surprisingly well for a unstable pre-alpha feature.
LAN play
2 Versus
Was scrapped prior to release. Can be enabled using A Patcher, however usually crashes immediately after selecting the option from the menu.
Online play
2 Versus
See note above.

Issues fixed

X-COM asks for CD

The Steam version sometimes asks you to insert the CD into the drive. When it does so, the game can't be resumed.
Extract folders from cd.iso and place them in the X-Com folder[3]
The Steam version is set to "Minimal Install" in order to conserve space. If copying files makes you feel nervous you can also run the installer on the ISO and have it overwrite the install with the "huge" size.[4] Certain files, such as the music and videos, will still remain on the disk however. You may want to copy these if problems continue.
Use a later version of DOSBox (0.74, Steam uses 0.72)[5]
Easiest way is to copy the DOSBox.exe into the x-com apocalypse SteamApps folder and rename to 'dosbox.exe'
Use a No-CD patch
Be sure you performed the first fix first before attempting this one. Note the ISO image is no longer required to be mounted after doing one of these.

Choppy Cutscenes

Exactly like it sounds, cutscene playback is poor.

Use DOS32A[citation needed]

Bind it to SMKP.EXE with the following command: sb /r Smkp.exe

Replace the builtin player[6]

Use this patch from StrategyCore user Bomb Bloke.

Included smacker player may hang in DOSBox. This can be fixed by upgrading it to the latest version here (extract smackply.exe and smackplw.exe with 7zip if you don't want the bloat of installing). Batch scripts may also need to be edited depending on where the game is installed to.

Black screen on startup

This game has issues with certain SVGA cards (both real and emulated). It can be fixed by using this patcher. Note this program requires Windows and will not run in DOSBox.

Game hangs after entering the Alien Dimension

Certain versions of the game shipped without the map files for the Alien Dimension. They can be downloaded here.

Other information


Technical specs Supported Notes
Software renderer
DOS video modes SVGA
Executable 32-bit 64-bit Notes


Middleware Notes
Audio Human Machine Interface (HMI) audio drivers
Cutscenes Smacker Video Cutscenes remain on disk in the retail version.

System requirements

Minimum Recommended
Operating system (OS) 5.0
Processor (CPU) Intel 486 DX/4 100 MHz
System memory (RAM) 8 MB (DOS)
16 MB (Windows 95)
Hard disk drive (HDD) 20 MB
Video card (GPU) SVGA


  1. 1.0 1.1 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).
  2. 2.0 2.1 File/folder structure within this directory reflects the path(s) listed for Windows and/or Steam game data (use Wine regedit to access Windows registry paths). Games with Steam Cloud support may store data in ~/.steam/steam/userdata/<user-id>/7660/ in addition to or instead of this directory. The app ID (7660) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.