Cantello: Are there any plans to add support for Mac games in the future? I guess at least some of the older games have Mac versions available that could be offered here...
I tried searching the forum as I thought somebody must have had that idea (pretty sure of that) but searching for "mac" or "macintosh" turned up nothing. :-/
A lot of forum software doesn't recognize search terms that are three characters or less, so doing a search for "Mac" or "Mac OS X" turns up nothing. Hardly anyone calls it the "Macintosh" anymore (unless you're Tim Cook) so that won't be of much help either.
If you want to search the forums, look for things like WINE, DOSBox, ScummVM, and CrossOver or Wineskin. CrossOver and Wineskin are the two leading distributions of WINE on Mac OS X; WINE is the miraculous compatibility layer which allows many Windows apps to work on Linux and OS X without Windows...DOSBox and ScummVM are similar cross-platform compatibility layers/emulators which allow many older GOG games to work in OS X.
To answer briefly your question, it's a matter of licensing and support. In the case of the former, many Mac ports were made and sold by third-party companies - many of which don't exist anymore. It's hard enough to negotiate the rights to sell games as they are already, without them doing it all over
again for Mac ports.
In the case of the latter, many Mac ports only run on PPC/Mac OS 9/Classic...which means they won't run on any Mac running 10.6-10.7, depending on the game. Fixing this would more often than not require rewriting a port; this would effectively mean that GOG wouldn't just be selling a Mac version...they'd be porting games too!
And that's on top of the fact that they've got a hard time supporting games for Win 7/Vista; they're just too small right now to devote the resources to supporting games on OS X/Linux, even if they can work in WINE, DOSBox, or ScummVM.
That doesn't matter much to most of us anyway (except for that one excessively arrogant guy) - because getting GOG's titles as they are to work on Linux or the Mac is surprisingly easy. You can see for yourself here:
CrossOver Compatibility Centre (C3):
http://www.codeweavers.com/compatibility/
WineHQ Application Database (winedb):
http://appdb.winehq.org/
And of course my own GOGmix: :)
http://www.gog.com/en/mix/mac_friendly_gog_games_4 Even if you're too cheap to pay for CrossOver, Wineskin works great for running some of the best GOG games out there, like the Baldur's Gate/Icewind Dale games.