How can I install mods on the Mac release of Planescape Torment?

Solution 1:

As user319078 says, the instructions at http://www.controlcommandescape.com/reviews/planescape-torment-review/ will work:

1. Download our mod compilation pack, which contains all the mods listed above as of 6 August 2012, and unzip it.
2. Right-click on the Planescape Torment application, and choose Show Package Contents.
3. Double-click on the drive_c shortcut, and from there go to Program Files/GOG Games/Planescape Torment/
4. Copy all the files and folders from the compilation pack (from within the pstmods folder) here.
5. Go back to the Planescape Torment application and double-click it whilst holding down the option key.
6. From the window that opens, click “Advanced”, then “Browse”.
7. From the file browser, go to Program Files/GOG Games/Planescape Torment and choose the Setup-PST-Fix.exe file, then click Done, then Quit.
8. Double-click the Planescape Torment application. A text window will pop up, follow the prompt to set your language and other options (it can take a while to patch some of the files).
9. Repeat steps 5-8 for the files Setup-PST-UB.exe, Setup-PST-Tweak.exe (you can probably skip this one if you’ve never played the game before), setup-widescreen.exe (you’ll need to enter your screen resolution for this mod), Setup-GhostDog’s-PST-UI.exe (setting text to 80% bigger works well for HD resolutions). If at any point the icon just bounces in the dock, force-quit it a couple of times and try again (or logout and back in and try again).
10. Double-click the Planescape Torment application whilst holding down the option key, click Advanced and go to Program Files/GOG Games/Planescape Torment and choose the torment.exe file, then click Done, then Quit.
11. You can now play the game normally.

It's worth noting that there's actually a Mac version of some of the mods, such as the widescreen mod, although it is not code-signed, and in any case I couldn't get it to work.

But for every other mod, you can try the following approach:

• Download the specific mod you want to use. For this example, I'll use the Ghostdogs_PST_UI_mod_v2.01.7z (although at the time of writing, that site appears to be down)
• Extract the files from the mod archive (The Unarchiver works)
• Right-click on Planscape Torment (sic) and choose Show Package Contents
• Double-click the drive_c alias and browse to GOG Games/Planescape Torment
• Copy or move the extracted files into that folder, making a note of the name of the file with the exe extension (Setup-GhostDog's-PST-UI.exe)
• Click the back button in Finder a couple of times, so that you're back inside the Planscape Torment.app folder.
• Double-click Wineskin.app
• Click Advanced and then the Tools tab, and then Command Line Shell
• In the window that appears, type cd "..\..\GOG Games\Planescape Torment"
• Type the name of the mod exe file (Setup-GhostDog's-PST-UI.exe) and press return
• Follow the prompts, if there are any (refer to other mod guides for specific options)
• Repeat for any other mods
• Close all the windows
• Run the game as normal

If something hangs, click Kill Wineskin Processes in the Wineskin Advanced window and try again

As an added bonus, it's probably worth updating the Wineskin wrapper while you're at it.

Solution 2:

Would the instructions included at the bottom of this page: http://www.controlcommandescape.com/reviews/planescape-torment-review/ help you out? I'm afraid I'm not a Mac user, so I can't verify if the instructions there still work for modern OS X, but they appear to be the only ones to have actually tried to get the mods working and posted an explanation on the internet. It also appears that the original locations of these mods are lost to the depths of Davy Jones's Router, so I doubt you'd be finding a mac version unless someone took the time to rip it from a mirror, unpack it, and re-make it for mac.