SiliconMind: Thanks for the clues but I didn't find
Wineskin inside package. What I actually found was a executable file
Blackwell-Legacy inside
MacOS folder. When I run it using console I can set some command line options like
-windowed or
-gfxfilter Hq3x but it's a bit annoying to go to console every time I want to run the game.
Is there a way to make those options 'stick'?
The Wineskin.app is inside
Blackwell Unbound.app
Blackwell Legacy.app
Blackwell Deception.app
Blackwell Convergence.app
The command line options you mentioned are those of Adventure Game Studio (AGS), the engine the Blackwell games are based upon. AGS comes with a setup file named "
acsetup.cfg" which stores it's configuration.
Within the packages of the Blackwell games (right-click or CMD-click the app => Show Package Contents) you'll find it under
drive_c/Program Files/GOG.com/<The game's name>/ You can edit the file with any text editor.
Toggle windowed=0 to windowed=1 to tell AGS to run in windowed mode.
Alternatively you can run AGS as it is (in fullscreen) and run the Winskin.app inside the package and configure Wineskin to create a Virtual Desktop, which is basically a Mac window and inside is the Virtual Windows Desktop in which AGS is running (in fullscreen).
Both options should let you play the game in a window on your Mac.