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Chasm: The Rift

From PCGamingWiki, the wiki about fixing PC games

This page is for the 1997 original. For the 2022 remaster, see Chasm: The Rift (2022). For the unrelated 2018 platformer, see Chasm.

Chasm: The Rift
Chasm: The Rift cover
Developers
Action Forms
Publishers
Retail GT Interactive
Retail Megamedia Corp
Digital SNEG
Release dates
DOS October 24, 1997
Windows (DOSBox) October 10, 2022
Taxonomy
Monetization One-time game purchase
Modes Singleplayer
Pacing Real-time
Perspectives First-person
Controls Direct control
Genres Action, FPS, Shooter
Themes Sci-fi
Series Chasm: The Rift
Chasm: The Rift on HowLongToBeat
Chasm: The Rift on IGDB
Chasm: The Rift on MobyGames
Chasm: The Rift on Wikipedia
Chasm: The Rift
Chasm: The Rift 1997
Chasm: The Rift (2022) 2022

Chasm: The Rift is a singleplayer first-person action, FPS and shooter game in the Chasm: The Rift series.

General information

Also known as Chasm: The Shadow Zone, which was the title of its 1996 demo.[1]
Recreated Original Website
GOG.com Community Discussions
GOG.com Support Page
Steam Community Discussions

Availability

Source DRM Notes Keys OS
Retail
DRM details are not known
DOS
GOG.com
DRM-free
Included as an extra with the 2022 release. Pre-packaged with DOSBox.
Windows
Steam
Icon overlay.png
Included as an extra with the 2022 release. Pre-packaged with DOSBox.
Windows
A demo is available.

Essential improvements

Patches

Patch csmtcpip.exe is the latest version. Place file in the installation folder and run via DOSBox. This patch includes the bonus levels.

PanzerChasm

An open-source reconstruction of the original game engine for modern operating systems.
Supports high resolutions, widescreen, OpenGL rendering, texture filtering, networking and both true and fake perspective modes.
Appears to no longer be in development, as the last version was released on December 3, 2017.

Game data

Configuration file(s) location

System Location
DOS
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/2061230/pfx/[Note 1]

Save game data location

System Location
DOS
Steam Play (Linux) <Steam-folder>/steamapps/compatdata/2061230/pfx/[Note 1]

Save game cloud syncing

System Native Notes
GOG Galaxy
Steam Cloud

Video

Input

Audio

Audio feature State Notes
Separate volume controls
FX Volume (for sound effects and voices) and CD Volume (for music).
Surround sound
Subtitles
Closed captions
Mute on focus lost
For DOSBox change the priority background value in the DOSBox configuration file.

Localizations

Language UI Audio Sub Notes
English

Issues fixed

Technical Issues

This game must be run under DOSBox. Being a demanding 3D game in software mode only, even modern computers have trouble running the game at acceptable frame rates. DOSBox Staging offers significantly better performace.
Mouse movement may stop working on occasion. Save and restart the game to fix.

Bad Performance

Performance Fix[citation needed]
  1. Patch the game to the latest version (csmtcpip.exe).
  2. Download this fixed .exe file
  3. Replace the PS10.exe in the installation folder with the fixed version

Notes

Without this fix the game crashes if DOSBox is set to Dynamic CPU mode. This patch fixes that issue, allowing the game to run with smoother frame rates, even at higher resolutions.

Music does not loop (DOSBox)

Music Fix[2]
  1. Download CTRLOOP.exe and place it in the installation folder
  2. Configure DOSBox to run CTRLOOP.exe before launching the game.

Other information

API

Technical specs Supported Notes
DOS video modes VGA, SVGA, SVGA (VESA)
Executable 32-bit 64-bitARM Notes
Windows
Requires PanzerChasm.
Linux
Requires PanzerChasm.[3]

System requirements

DOS
Minimum Recommended
Operating system (OS) 4.0
Processor (CPU) Intel 486 DX2-66 66 MHz
System memory (RAM) 8 MB
Hard disk drive (HDD) 12 MB
Video card (GPU)


Notes

  1. 1.0 1.1 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>/2061230/ in addition to or instead of this directory. The app ID (2061230) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.

References