I have another question. The game is installed alongside DOSBox, which I don't mind.
However, I read a while ago that the game was supported in ScummVM as well. I tried to add the game in ScummVM, but it fails to recognize IHNMAIMS (I use v1.6.0). Is there a way to fix this or is ScummVM compatibility regarding this game forgettable anyway?

I played it on ScummVM recently, I think it was version 1.5.0 or even before. I noticed quite a few animation glitches (characters not erased, animations sticking, etc.), especially during cutscenes. I don't remember these from the DOS version.

The compatibility page still lists "minor glitches":.
http://scummvm.org/compatibility/DEV/ihnm/

Edit: On the other hand, some of the bugs that are present in the DOS version have been fixed in ScummVM (SPOILER WARNING):
http://wiki.scummvm.org/index.php/SAGA/Bugs#I_Have_No_Mouth.2C_and_I_Must_Scream

Choose whichever you prefer.

This is a list of the datafiles required, the GOG version seems to have them all packed into NoMouth.dat as an image of the original CD.

With other games I've been able to extract the .dat file, but 7zip doesn't let me extract NoMouth.dat. If you can find a program to extract that you should be to use the files to play it in ScummVM.

@ Lafazar: Thanks for the info, it seems as if ScummVM can be a viable option now that the most annoying glitches have been taken care of.

@ DPB:
Try to rename NoMouth.dat so it can be mounted in a virtual drive. That way you can access and extract the needed files.

The .dat file is probably just an .iso. Try that extension first with any program such as PowerIso or DaemonTools.

I do not know how in Windows, but this time there is something non-standard with NoMouth.dat - it can't be easily just renamed to .iso and mounted (in Mac OSX at least).

But as it works in DOSBOX, you can mount and extract files directly in DOSBOX itself (mount your GOG folder with IHNMAIMS, mount properly NoMouth.dat, make some directory (e.g. ISO) and copy files there:

Z:\>mount c /your_path_to/IHNMAIMS (e.g.: mount c .. -when you started Dosbox.exe from installed DOSBOX folder inside your game folder)
Z:\>imgmount d -t iso -fs iso C:\NOMOUTH.DAT
Z:\>mkdir C:\ISO
Z:\>copy D:\*.* C:\ISO\

now you should have ISO directory inside your game directory with all files extracted, and now you can choose this directory for installing game in ScummVM

Thanks for the instructions cyboff, I've got it working in ScummVM now. Renaming NoMouth.dat didn't work in Windows either.

Thanks cyboff, those instructions worked great.

EDIT: I don't think I wrote that o.O

Thanks Cyboff! Your wizardry got it working great on Scummvm!

Now if I can only figure out how to send the gog version to the android version of Scummvm and play it on the go.....btw, Gog you guys have a TON of smaller older games that could easily be played on iOS and Android should think of expanding the business

This isn't quite what you are looking for but here's a request someone posted in the feature requests.

http://www.gog.com/wishlist/site/ios_android_gog_app

I know this post is very old, but it has helped me a lot. Just in case anyone's wondering, you can copy the iso folder to the phone, and SCUMMVM will add the game from that folder. You don't need any other files.

The contents of nomouth.dat can easily be extracted by 'unar', downloadable for Windows, OS X and GNU/Linux via the following page:
http://unarchiver.c3.cx/commandline

Hi -

What does the -fs parameter do in this context? I cannot find this information anywhere, not even on the dosbox wiki.

it specifies resulting file system format. Just for extracting, I think you can choose fat too...

from https://www.dosbox.com/wiki/IMGMOUNT :

IMGMOUNT DRIVE [imagefile] -t [image_type] -fs [image_format]
-size [sectorsbytesize, sectorsperhead, heads, cylinders -u DRIVE]

-fs
The following are valid file system formats:
iso
Specifies the ISO 9660 optical disc format.

fat
Specifies that the image uses the FAT file system. DOSBox will attempt to mount this image as a drive in DOSBox and make the files available from inside DOSBox.

none
DOSBox will make no attempt to read the file system on the disk. This is useful if you need to format it or if you want to boot the disk using the BOOT command. When using the "none" filesystem, you must specify the drive number (2 or 3, where 2=master, 3=slave) rather than a drive letter. For example, to mount a 70MB image as the slave drive device, you would type: "imgmount 3 d:\test.img -size 512,63,16,142 -fs none" (without the quotes). Compare this with a mount to read the drive in DOSBox, which would read as: "imgmount e: d:\test.img -size 512,63,16,142".