jsjrodman: If I download this on windows, I can click on an icon and it runs.
If I download this on a mac, I can't click on an icon and have it run.
Waltorious: OK, I see what you mean now. But making that icon yourself is actually pretty easy, I think. Or at least it is in Windows. If it wasn't automatically made by GOG, then you would just create a shortcut and add a tag telling it to use the .conf file that GOG supplies. Then you can click on that shortcut and it runs.
I would guess something like that can be done on Mac. But what might be tricky is the GOG installer. This is a Windows installer that puts all the files in the right places and even installs DOSBox if one doesn't have it already, and also creates the .conf file you need. If that installer doesn't run on Mac, then it wouldn't be so easy to set it up to run yourself.
I know how dosbox works. It's not that simple.
If the only provided version of a game was a boxer-packaged dmg disk image for mac, it would NOT be a matter of creating a shorcut to launch it on windows.
jsjrodman: I play windows games on windows, but this sort of ancient RPG is much more convenient for me on my macbook. I know I can package them myself, and I probably will, but still I'd be much happier with them prepackaged for my "mobile" gaming platform.
Gydion: If the game is already here, but not for platform X:
A. Technical difficulties
B. Legal issues
(sometimes c) Or D, it hasn't been done yet.
Considering that platforms are being added all the time, D is pretty common.