Hi Grayman, What I ran into is this: When you download the thedarkmod.zip, it's easiest if you just put it on the desktop, expand, and run the updater, get the whole thing downloaded, and then move it into $HOME/Library/Application Support/Doom 3/. There is a problem in the updater script that doesn't like directories with spaces. Next, I copied Doom3.app into $HOME/Library/Application Support/Doom 3/ Next, just run the launcher (I make an alias to it and throw it on the desktop for ease). HTH. Edit: If there is a better way than copying the whole game into $HOME/Library/Application Support/Doom 3/ Please advise. It's wonky but it works.