Alien Carnage

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Alien Carnage
Alien Carnage cover
Interactive Binary Illusions
SubZero Software
Apogee Software
Release dates
DOS October 10, 1993
Windows (DOSBox) October 23, 2014[1]
macOS (OS X) (DOSBox) May 5, 2015[2]
Alien Carnage on Wikipedia
Alien Carnage
Alien Carnage 1993
Zombie Wars 1996

Key points

Originally released as Halloween Harry.[3]
Re-released as freeware on May 24, 2007.[3]

General information

Official site
Steam Community Discussions


Source DRM Notes Keys OS
Use DOSBox.
Developer website
Includes fixes not present in retail versions.

Essential improvements[edit]

Run in DOSBox[edit]

To run correctly in DOSBox, set cycles=max and timed=false. Leave all other DOSBox settings at their defaults.[4]

Game data[edit]

Configuration file(s) location[edit]

System Location
DOS <path-to-game>\HARRY.CFG
Windows <path-to-game> (mounted in DOSBox)[Note 1]
macOS (OS X) <path-to-game> (mounted in DOSBox)[Note 1]
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/358280/pfx/[Note 2]

Save game data location[edit]

System Location
DOS <path-to-game>\SLOT.*
Windows <path-to-game> (mounted in DOSBox)[Note 1]
macOS (OS X) <path-to-game> (mounted in DOSBox)[Note 1]
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/358280/pfx/[Note 2]
High scores are stored in <path-to-game>\HARRY.TOP

Save game cloud syncing[edit]

System Native Notes
Steam Cloud


General settings.
General settings.

Graphics feature State Notes
Widescreen resolution
320x200 only.
4K Ultra HD
Field of view (FOV)
Toggle with Alt+ Enter (when using DOSBox).
Borderless fullscreen windowed
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
48 fps frame rate cap.



Audio feature State Notes
Separate volume controls
On/off only.
Surround sound
Everything is text-based.
Closed captions
Mute on focus lost
The original release (Halloween Harry) includes a jukebox, which can be run with <path-to-game>\STUDIO.EXE.


Language UI Audio Sub Notes

Issues unresolved[edit]

"Runtime error 203" level restart on death[edit]

Dying may cause this error and restart the level instead of returning to the last checkpoint.[4][5]

Other information[edit]


Technical specs Supported Notes
DOS video modes VGA 320x200
Executable 32-bit 64-bit Notes
macOS (OS X)

System requirements[edit]

Minimum Recommended
Operating system (OS) 3.3
Processor (CPU) 286
System memory (RAM) 640 KB
Hard disk drive (HDD) 10 MB
Video card (GPU) VGA


  1. 1.0 1.1 1.2 1.3 File/folder structure within the installation folder reflects the path(s) listed for DOS and/or PC booter game data.
  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>/358280/ in addition to or instead of this directory. The app ID (358280) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.