I Have No Mouth, and I Must Scream

The Dreamers Guild QUByte Interactive · Nightdive Studios, Atari

Released: Oct 17, 2013
Platforms
Last updated: 14 Sep 2026, 02:56 GMT

Updates & announcements

20 posts

02 Jul 2026PCGamesN
This week's Epic Games Store free games include a nightmarish piece of PC gaming history, and a way to cleanse your brain afterwards
Dark, disturbing, and controversial, I Have No Mouth, And I Must Scream is one of those essential touchstones of PC gaming history. It's an experience to be recommended with caution - a refrain you could apply to many classic adventure games - but one that ardent point-and-click
21 Nov 2025Developer post
IHNMAIMS Definite Update Patch 1 is available now
Hello everyone, We have a small update available now for I Have No Mouth, and I Must Scream which addresses the following issues: A crash cause by an asset conflict has been fixed Unimportant leftover build files have been removed from the game The PC version now has 128 save slo
Hello everyone,
We have a small update available now for I Have No Mouth, and I Must Scream which addresses the following issues:
A crash cause by an asset conflict has been fixed
Unimportant leftover build files have been removed from the game
The PC version now has 128 save slots
A situation where the player could not acquire the Gorrister's Heart achievement has been fixed
A black screen issue caused by pressing New Game or Load Game too quick after pressing one or the other has been fixed
Attempting to save the game in any language other than English will no longer fail
Incorrect information about the save load system has been corrected in the manual
When starting a new game on the Mac version, the audio issues have been fixed
Linux ScummVM has been updated to 2.9.1
Thank you for identifying these issues and sending them along for us to address.
Happy 30th birthday to the original game!
Daniel G,
Nightdive Studios
Original post
16 Oct 2025GamingOnLinux
Nightdive release definitive PC update for I Have No Mouth, and I Must Scream
Nightdive Studios announced the definitive update for I Have No Mouth, and I Must Scream has now landed on PC with Linux support. Read the full article here:
16 Oct 2025Developer post
I Have No Mouth, and I Must Scream - Definitive Update
I Have No Mouth, and I Must Scream has been updated on Steam and GOG for PC, Mac, and Linux! PATCH NOTES Added modern menu options, allowing players to customize their experience as they prefer (screen size adjustments, background image selection, visual filters, aim sensitivity)
I Have No Mouth, and I Must Scream has been updated on Steam and GOG for PC, Mac, and Linux!
PATCH NOTES
Added modern menu options, allowing players to customize their experience as they prefer (screen size adjustments, background image selection, visual filters, aim sensitivity).
Added in-game bonus content, including a fully localized manual and jukebox with the complete I Have No Mouth, and I Must Scream soundtrack.
Improved controller support, added pre-set shortcuts for smoother and more intuitive gameplay.
Added an achievement system to encourage exploration and extend replayability.
Added cloud saves, game progress is now stored and linked to the player’s account, allowing the game to continue being played across different devices.
Original post
24 Dec 2021Rock, Paper, Shotgun
I Have No Mouth And I Must Scream is free on GOG right now
The latest free game giveaway in GOG's winter sale is an unexpected one for the festive season, but perhaps a game which captures the feeling of being trapped at a seemingly endless Christmas lunch with awful relatives: I Have No Mouth And I Must Scream . Nothing says 'bad family
04 Feb 2019Rock, Paper, Shotgun
The Ancestor Bundle contains some PC classics for pennies
Our audience may skew towards us old fogeys who remember the days of DOS memory management. Some of you are still young, or just late to the party. The Ancestor Bundle over on Fanatical costs as much as a cup of coffee – cheap cafeteria stuff, not Starbucks – and gets you a bunch
04 Jan 2018Developer post
Update #9 available now
Hello Everyone, A new update is available now for I Have No Mouth, and I Must Scream which contains the following improvements on Windows, MacOS and Linux: Updated ScummVM to ScummVM 2.0.0 which also contains an update to Simple DirectMedia Layer 2 (SDL2). This should improve com
Hello Everyone,
A new update is available now for I Have No Mouth, and I Must Scream which contains the following improvements on Windows, MacOS and Linux:

Updated ScummVM to ScummVM 2.0.0 which also contains an update to Simple DirectMedia Layer 2 (SDL2). This should improve compatibility with a lot of monitor setups and resolve mouse issues,
Fixed Linux Launch Steam Text.
Upgraded Linux Executable to Ubuntu 16.04 LTS 64-bit
SAGA Engine Improvements:

Fixed crash when using the 'Give' verb on an actor,
Fixed Gorrister becoming invisible and stuck when reloading at mooring ring,
Fixed the conversation panel background colour.
You can learn more about ScummVM at ScummVM.org
Enjoy the update!
Daniel,
Night Dive Studios
Original post
04 Jan 2018Developer post
Update #9 available now
Hello Everyone, A new update is available now for I Have No Mouth, and I Must Scream which contains the following improvements on Windows, MacOS and Linux: Updated ScummVM to ScummVM 2.0.0 which also contains an update to Simple DirectMedia Layer 2 (SDL2). This should improve com
Hello Everyone,
A new update is available now for I Have No Mouth, and I Must Scream which contains the following improvements on Windows, MacOS and Linux:

Updated ScummVM to ScummVM 2.0.0 which also contains an update to Simple DirectMedia Layer 2 (SDL2). This should improve compatibility with a lot of monitor setups and resolve mouse issues,
Fixed Linux Launch Steam Text.
Upgraded Linux Executable to Ubuntu 16.04 LTS 64-bit
SAGA Engine Improvements:

Fixed crash when using the 'Give' verb on an actor,
Fixed Gorrister becoming invisible and stuck when reloading at mooring ring,
Fixed the conversation panel background colour.
You can learn more about ScummVM at ScummVM.org
Enjoy the update!
Daniel,
Night Dive Studios
Original post
31 Mar 2017Developer post
Update #8 available now
Hello Everyone, There is an update available now for I Have No Mouth, and I Must Scream which includes the following updates and changes: Updated the ScummVM engine from 1.8.0 to 1.9.0.2: SAGA: Fixed user interface colors in the French and German versions of I Have No Mouth and I
Hello Everyone,
There is an update available now for I Have No Mouth, and I Must Scream which includes the following updates and changes:

Updated the ScummVM engine from 1.8.0 to 1.9.0.2:
SAGA: Fixed user interface colors in the French and German versions of I Have No Mouth and I Must Scream.
SAGA: Improved AdLib music support
Translation files updated,
Steam Cloud Save support has been enabled. Saves will be synced, and can be played across, Windows, Mac, and Linux,
Updated internal depot configuration,
Updated Source Code.
Enjoy,
Daniel,
Nightdive Studios.
Original post
31 Mar 2017Developer post
Update #8 available now
Hello Everyone, There is an update available now for I Have No Mouth, and I Must Scream which includes the following updates and changes: Updated the ScummVM engine from 1.8.0 to 1.9.0.2: SAGA: Fixed user interface colors in the French and German versions of I Have No Mouth and I
Hello Everyone,
There is an update available now for I Have No Mouth, and I Must Scream which includes the following updates and changes:

Updated the ScummVM engine from 1.8.0 to 1.9.0.2:
SAGA: Fixed user interface colors in the French and German versions of I Have No Mouth and I Must Scream.
SAGA: Improved AdLib music support
Translation files updated,
Steam Cloud Save support has been enabled. Saves will be synced, and can be played across, Windows, Mac, and Linux,
Updated internal depot configuration,
Updated Source Code.
Enjoy,
Daniel,
Nightdive Studios.
Original post
31 Mar 2016Developer post
Update #7 available now
Hello Everyone, A small update is available now for IHNMAIMS. ScummVM ( ) has been updated from the 1.8.0Git build to the official 1.8.0 release. Source Code updated. Enjoy. Daniel, Night Dive Studios
Hello Everyone,
A small update is available now for IHNMAIMS.

ScummVM ( http://www.scummvm.org ) has been updated from the 1.8.0Git build to the official 1.8.0 release.
Source Code updated.
Enjoy.
Daniel,
Night Dive Studios
Original post
31 Mar 2016Developer post
Update #7 available now
Hello Everyone, A small update is available now for IHNMAIMS. ScummVM ( ) has been updated from the 1.8.0Git build to the official 1.8.0 release. Source Code updated. Enjoy. Daniel, Night Dive Studios
Hello Everyone,
A small update is available now for IHNMAIMS.

ScummVM ( http://www.scummvm.org ) has been updated from the 1.8.0Git build to the official 1.8.0 release.
Source Code updated.
Enjoy.
Daniel,
Night Dive Studios
Original post
19 Mar 2015Developer post
Update #6 available now
Hello Everyone. A new update is out now for IHNMAIMS which contains the following changes and fixes: Added a new launch option. People will non 100% OpenGL supported hardware can use it and should now be able to play the game without experiencing a black screen on start-up. The S
Hello Everyone. A new update is out now for IHNMAIMS which contains the following changes and fixes:

Added a new launch option. People will non 100% OpenGL supported hardware can use it and should now be able to play the game without experiencing a black screen on start-up. The Steam Overlay will not function in this mode.
Updated ScummVM ( http://www.scummvm.org ) to 1.8.0Git (Released on March 16th 2015, source code provided) which contains a fix for Ellen disappearing from the screen when loading a save game. Saves that are affected by this bug will not be retroactively fixed and a previous save will have to be loaded.
Enjoy the update.
Saleck,
Night Dive Studios
Original post
19 Mar 2015Developer post
Update #6 available now
Hello Everyone. A new update is out now for IHNMAIMS which contains the following changes and fixes: Added a new launch option. People will non 100% OpenGL supported hardware can use it and should now be able to play the game without experiencing a black screen on start-up. The S
Hello Everyone. A new update is out now for IHNMAIMS which contains the following changes and fixes:

Added a new launch option. People will non 100% OpenGL supported hardware can use it and should now be able to play the game without experiencing a black screen on start-up. The Steam Overlay will not function in this mode.
Updated ScummVM ( http://www.scummvm.org ) to 1.8.0Git (Released on March 16th 2015, source code provided) which contains a fix for Ellen disappearing from the screen when loading a save game. Saves that are affected by this bug will not be retroactively fixed and a previous save will have to be loaded.
Enjoy the update.
Saleck,
Night Dive Studios
Original post
16 Aug 2014Developer post
Update #5 available now
Hello Everyone, A new update for IHNMAIMS is now available which contains the following: Updated ScummVM from 1.6.0 to 1.7.0 across Windows, OS X and GNU/Linux. opengl_nearest is the new display renderer. This provides really sharp looking graphics and also re-enables the Steam O
Hello Everyone,
A new update for IHNMAIMS is now available which contains the following:

Updated ScummVM from 1.6.0 to 1.7.0 across Windows, OS X and GNU/Linux.
opengl_nearest is the new display renderer. This provides really sharp looking graphics and also re-enables the Steam Overlay for Windows. It runs at your monitors current resolution.
I have completely re-written the shell launcher for GNU/Linux and implemented a new libraries system. This should allow for many more users of GNU/Linux to play the game and not just people on the latest versions of Ubuntu and Mint.
The scummvm-ihnmaims.ini file has been hugely reduced in content which should allow for the most vanilla start to the game in ScummVM anyone could ask for.
Launch parameters have changed. Instead of "ihnmaims" being used, it is now simply the ScummVM default "ihnm". This also allows users to save and load using the ScummVM menu (CTRL+F5 on Windows and GNU/Linux, Fn + F5 for Mac OS X). A Restart of your Steam Client may be necessary to receive this change and does not affect GNU/Linux.
The Modern ScummVM skin now works on GNU/Linux.
ScummVM source code has been updated to 1.7.0. SDL source code is now included.
Important! Because of specific changes in how ScummVM now works, your save games will need to be renamed. Simply go into the Saves folder in your IHNMAIMS installation and rename any "IHNMAIMS.s0x" file to "ihnm.s0x" and your saves will reappear. Apologies for the inconvenience.
I have been working with the ScummVM team to get to the bottom of the 'Characters disappearing on loading saves' bug that has been reported on the forums. The problem seems to have been solved or has gotten much rarer in 1.7.0 but it might still happen. If this does, I urge you to report the issue to the ScummVM Bugtracker and submit your saves to them for them to look at.
If you have been affected by the bug then, currently, there is no solution for the problem. You will have to load a previous save if you have one or restart the game if you don't. Apologies to anyone who has been affected.
Enjoy the update and thank you for playing :)
Saleck,
Night Dive Studios
Original post
16 Aug 2014Developer post
Update #5 available now
Hello Everyone, A new update for IHNMAIMS is now available which contains the following: Updated ScummVM from 1.6.0 to 1.7.0 across Windows, OS X and GNU/Linux. opengl_nearest is the new display renderer. This provides really sharp looking graphics and also re-enables the Steam O
Hello Everyone,
A new update for IHNMAIMS is now available which contains the following:

Updated ScummVM from 1.6.0 to 1.7.0 across Windows, OS X and GNU/Linux.
opengl_nearest is the new display renderer. This provides really sharp looking graphics and also re-enables the Steam Overlay for Windows. It runs at your monitors current resolution.
I have completely re-written the shell launcher for GNU/Linux and implemented a new libraries system. This should allow for many more users of GNU/Linux to play the game and not just people on the latest versions of Ubuntu and Mint.
The scummvm-ihnmaims.ini file has been hugely reduced in content which should allow for the most vanilla start to the game in ScummVM anyone could ask for.
Launch parameters have changed. Instead of "ihnmaims" being used, it is now simply the ScummVM default "ihnm". This also allows users to save and load using the ScummVM menu (CTRL+F5 on Windows and GNU/Linux, Fn + F5 for Mac OS X). A Restart of your Steam Client may be necessary to receive this change and does not affect GNU/Linux.
The Modern ScummVM skin now works on GNU/Linux.
ScummVM source code has been updated to 1.7.0. SDL source code is now included.
Important! Because of specific changes in how ScummVM now works, your save games will need to be renamed. Simply go into the Saves folder in your IHNMAIMS installation and rename any "IHNMAIMS.s0x" file to "ihnm.s0x" and your saves will reappear. Apologies for the inconvenience.
I have been working with the ScummVM team to get to the bottom of the 'Characters disappearing on loading saves' bug that has been reported on the forums. The problem seems to have been solved or has gotten much rarer in 1.7.0 but it might still happen. If this does, I urge you to report the issue to the ScummVM Bugtracker and submit your saves to them for them to look at.
If you have been affected by the bug then, currently, there is no solution for the problem. You will have to load a previous save if you have one or restart the game if you don't. Apologies to anyone who has been affected.
Enjoy the update and thank you for playing :)
Saleck,
Night Dive Studios
Original post
03 May 2014Developer post
Update #4 available now
Hello Everyone, A new update is out now. It includes the following: New Bonus Content! - Read the original short story by Harlan Ellison that inspired the game itself. You will find the content in your 'Bonus Content' folder inside your IHNMAIMS installation. All users now have a
Hello Everyone,
A new update is out now. It includes the following:

New Bonus Content! - Read the original short story by Harlan Ellison that inspired the game itself. You will find the content in your 'Bonus Content' folder inside your IHNMAIMS installation.
All users now have access to both the MP3 AND the OGG versions of the Soundtrack.
More effecient depot management! - Backing up and restoring backups on a different OS should go much smoother now. It also allows us to put out updates much more effeciently.
The original SDL.DLL has been restored for Windows. This should fix reported mouse stuttering issues on some computers.
Enjoy the new content :)
Original post
03 May 2014Developer post
Update #4 available now
Hello Everyone, A new update is out now. It includes the following: New Bonus Content! - Read the original short story by Harlan Ellison that inspired the game itself. You will find the content in your 'Bonus Content' folder inside your IHNMAIMS installation. All users now have a
Hello Everyone,
A new update is out now. It includes the following:

New Bonus Content! - Read the original short story by Harlan Ellison that inspired the game itself. You will find the content in your 'Bonus Content' folder inside your IHNMAIMS installation.
All users now have access to both the MP3 AND the OGG versions of the Soundtrack.
More effecient depot management! - Backing up and restoring backups on a different OS should go much smoother now. It also allows us to put out updates much more effeciently.
The original SDL.DLL has been restored for Windows. This should fix reported mouse stuttering issues on some computers.
Enjoy the new content :)
Original post
19 Feb 2014Developer post
Update #3 available now
Hello Everyone, An update is out now for IHNMAIMS which includes the following changes: Engine Change for Windows, Linux and Mac OS X - DOSBox has been replaced with ScummVM 1.6.0. This also comes with the following bugfixes (spoilers ahead): When loading a save game, the music p
Hello Everyone,
An update is out now for IHNMAIMS which includes the following changes:

Engine Change for Windows, Linux and Mac OS X - DOSBox has been replaced with ScummVM 1.6.0. This also comes with the following bugfixes (spoilers ahead):
When loading a save game, the music played is still the music which was playing in the previous scene before the save game is loaded
When picking up or using objects in a scene, sometimes a "ghost" object is created in the top left corner of the screen
Chapter 1 (Gorrister): After reading the note in the starting room, the hotspot for the note moves to the upper-left corner, so you can read it again and again
Chapter 1 (Gorrister): Gorrister's heart is not supposed to have a "use" phrase attached to it (it's not used anywhere, it's only given), but when "used", an incorrect reply is given to the player ("It's too narrow for me to pass", said when Gorrister tries to pick up the heart without a rope)
Chapter 1 (Gorrister): Using the knife to cut out Edna's heart can lead to unexpected behavior the second time this is performed. The player is either able to talk again to the dead Edna, or get her heart again and be stuck
Chapter 1 (Gorrister): the left graffitti in the restroom can't be examined. Gorrister just walks back to the bar instead
Chapter 1 (Gorrister): When Edna drops her key in the freezer room, the user can hover over 2 items with the cursor ("The key" and "Edna's key")
Chapter 3 (Benny): After talking to the child via the monitor, Benny walks backwards
Chapter 3 (Benny): Putting the lottery bag into the hole and retrieving it back from there summons another Psychic Profile book in the inventory (instead of the bag icon)
This engine change unfortunately means that any saved games made previously will no longer work with this new update.
Enjoy!
Original post
19 Feb 2014Developer post
Update #3 available now
Hello Everyone, An update is out now for IHNMAIMS which includes the following changes: Engine Change for Windows, Linux and Mac OS X - DOSBox has been replaced with ScummVM 1.6.0. This also comes with the following bugfixes (spoilers ahead): When loading a save game, the music p
Hello Everyone,
An update is out now for IHNMAIMS which includes the following changes:

Engine Change for Windows, Linux and Mac OS X - DOSBox has been replaced with ScummVM 1.6.0. This also comes with the following bugfixes (spoilers ahead):
When loading a save game, the music played is still the music which was playing in the previous scene before the save game is loaded
When picking up or using objects in a scene, sometimes a "ghost" object is created in the top left corner of the screen
Chapter 1 (Gorrister): After reading the note in the starting room, the hotspot for the note moves to the upper-left corner, so you can read it again and again
Chapter 1 (Gorrister): Gorrister's heart is not supposed to have a "use" phrase attached to it (it's not used anywhere, it's only given), but when "used", an incorrect reply is given to the player ("It's too narrow for me to pass", said when Gorrister tries to pick up the heart without a rope)
Chapter 1 (Gorrister): Using the knife to cut out Edna's heart can lead to unexpected behavior the second time this is performed. The player is either able to talk again to the dead Edna, or get her heart again and be stuck
Chapter 1 (Gorrister): the left graffitti in the restroom can't be examined. Gorrister just walks back to the bar instead
Chapter 1 (Gorrister): When Edna drops her key in the freezer room, the user can hover over 2 items with the cursor ("The key" and "Edna's key")
Chapter 3 (Benny): After talking to the child via the monitor, Benny walks backwards
Chapter 3 (Benny): Putting the lottery bag into the hole and retrieving it back from there summons another Psychic Profile book in the inventory (instead of the bag icon)
This engine change unfortunately means that any saved games made previously will no longer work with this new update.
Enjoy!
Original post

Updates & announcements

PATCH NOTES