Install macports ( https://trac.macports.org/wiki/InstallingMacPorts ) (Xcode is installable through the App store nowadays). Install wine & cabextract through Macports by running the following commands in a terminal Code: sudo port install wine sudo port install cabextract Still in a terminal, move to the directory where wine got installed and use winetricks to install a bunch of libraries Code: sh winetricks corefonts directx9 msxml3 If you run the game and you get errors about directx you can try the following Spoiler : Code: sh winetricks d3dx9 d3dx9_26 d3dx9_28 d3dx9_31 d3dx9_35 d3dx9_36 If that doesn't work either, you can copy and overwrite EXACTLY the following dynamic link libraries to wines windows/system32 directory: d3dx9_26.dll d3dx9_31.dll d3dx9_32.dll d3dx9_33.dll d3dx9_34.dll If you have a windows box, you can copy them from there, otherwise they can be found online. If you get errors relating to xml: Spoiler : Copy and overwrite EXACTLY the following dynamic link libraries to wines windows/system32 directory: msxml3.dll msxml3r.dll If you have a windows box, you can copy them from there, otherwise they can be found online. run winecfg from a terminal Code: winecfg Set windows version to XP Go to the tab Libraries Add new overrides (native) for msxml3, d3dx9_26, d3dx9_31, d3dx9_36 Go to the tab Graphics Make sure to check 'Emulate a virtual desktop' (I couldn't get it to work decently otherwise, might be different under Lion though as it has better support for fullscreen apps); pick a resolution to you liking. I went to stations and added my download folder as a station to make it easier to find my save files. Now onto installing Civ4 Insert the CD/DVD (I have Civ4Complete so I only had one installer to run). Using the terminal, navigate to the CD/DVD (cd /Volumes/CIV4_COMPLETE/ in my case) Run the installer Code: wine setup.exe Download the 3.19 patch and navigate to it using the terminal Install the patch Code: wine Civ4BeyondTheSwordPatch3.19.exe Download Buffy and navigate to it using the terminal; install it Code: wine BUFFY-3.19.003.exe Run the program Code: wine ~/.wine/drive_c/Program\ Files/2K\ Games/Firaxis\ Games/Sid\ Meier\'s\ Civilization\ 4\ Complete/Beyond\ the\ Sword/Civ4BeyondSword.exe A directory called My Games is can now be found on your drive (in Users/USERNAME/) where you can find a 'Beyond the Sword' folder which should contain your .ini file where you can change the autosave interval (among other things). Hope this helps, it has been a while since I've installed it myself, but I don't think I've missed any steps. Still, if you run into trouble, just ask and I'll try to help you out.