Just an idea : since some games are actually DOS games with DOSBOX preconfigured, you should be able to offer them to mac/linux users too, right?
The easiest way for you might be ("might" only, for I don't know how the owners will like it) to optionnally deliver those games as bare ZIP files.
This said: what is GOG position on "opensource remakes" of games? Most of them need the original data to work, and GOG might be a pretty sweet (and legal) way of getting them. But it depends on whether you're willing to help it, ignore it or even fight it...
(nevertheless, that GOG thing is the hell of a good idea)

I second the zipping of Dosboxed games. My laptop runs Linux and I'd prefer not to mess with Wine and the gog-installers. They might want to add the dosbox.conf GoG has made, because they're pretty good.
Not a big deal, but the less effort to run the game the better ;)

Oh, yes! I finally managed to get DosBox running (ummm... You can read it: 'I finally learned to use it :D' ) under Linux and it runs muuuch better than the one under windows...

I'd definitely like this. An alternative would be to just allow the download of disk images of the game. Not sure if licensing would allow for this though.

I haven't bought any dosbox games yet, but I dont see why you can't?
Let say that you dont have anything else than linux, can you still run wine to install the game? If so, it should unpack your game to some specified folder just like it does when you install any other software with wine. Correct me if I am wrong, but would there just be those files that you might want with your zip file?
Then you just run those with yout linux dosbox? Right?
Then again, most of those old games like Descent already has linux binaries, which you can also replace to installation directory...

It could be just even better, install with Wine, but start the linux build of DosBOX, Wine supports calling linux commands.

Mmmh, thanks to all for your answers.
If I dare, maybe one last silly idea (if not already implemented, but then I wasn't able to find it) : a simple way to show if a game is dosbox-based or not. Like a "this game can also be played on Mac/Linux if you're know how to do", probably.
What do you think?

I totally forgot that subject, and probably everyone already had the solution, but if you want to extract content from a GOG installer on a Linux platform, the command you look for is innoextract. You might have to install it before (it's in Debian/Ubuntu's repos).

Still, having a way to know beforehand if a game's DOSBOX based or not could be a huge plus.

You might want to check out: http://www.gogonlinux.com/

You can open and extract the new mac installers (dmg files) with any packager, so the new mac
installers are kind of our zip-files we wanted ;-). At the moment not every game using scummvm
or dosbox is available yet for mac, but it's very likely gog will add them later. While it's hard
to make the old mac games run on the new mac os you can assume that every old game (not the indie or
other newer games) available for mac are using dosbox or scummvm. With Fallout and MDK there
are also games that use the dos-versions for the mac installers while the original releases
are windows versions.

Edit: Btw, I can't post links at the moment (forum bug?). For a list of dosbox games visit the dosbox-wiki on the dobox page. Unfortunately that list isn't updated for a long time, but still can give you an helpful overview.

Thanks for the hint, that sounds full of interesting knowledge ;)
Well, as far as I remember, extracting DMG files on Linux is a real pain in the bash. Innoextract (for .exe setups) is much more convenient than mount ;)

There you have point.

Still, my original request wasn't only for the sake of being convenient : it would be a rather nice recognition to the authors of said utilities if GOG showed (even if through obscure lists) what games are using them.

I have to support this. Zipped DOSBox games would make life much easier.

But goggame center for Linux would be appreciated too ;)

2013 is year of gaming on Linux after all. Don't be late GOG!

*Deleted

Just focus on getting the game on GOG, then you can suggest/recommend "open source remake X". Duke Nukem 3D is available and the open source version EDuke32 links people to GOG to buy it for the one file you need. If GOG sold Transport Tycoon (Deluxe), you could use the files from that for OpenTTD. Both sides may even be persuaded to link to one-another.

The Mac GOG release of Fallout is the DOS version?! I've been looking for that! Thanks, you've made my day. :D