I've followed these basic steps a few times on both OS X Snow Leopard and Lion. I'd expect they should work with other OS X versions too. Take note that OS X absolutely HATES UO Auto-Map (try as I might, I've never successfully gotten it to run). Also, in-game music won't play, though sound effects still work. The basic steps are: - Install X11 of some type - Install Xcode and Apple's Command Line Developer Tools - Install and update MacPorts - Use MacPorts to install Wine and winetricks - Use winetricks to install dotnet20 (and some other stuff) - Install UO and Razor - Enter Happyland The detailed steps are: 1) Download and install XQuartz. Alternatively, you could Install Apple's X11.app, provided by the â€œX11 Userâ€ package (an optional installation on your system CDs/DVD). I'm not positive, but I think that X11.app might come already installed on Lion and later. You could search for X11 in Spotlight to see if it's already installed. 2) Download (or find your install CDs) and install Apple's Xcode Developer Tools (version 4.4 or later for Mountain Lion, 4.1 or later for Lion, 3.2 or later for Snow Leopard, or 3.1 or later for Leopard), found at the Apple Developer Connection site, on your Mac OS X installation CDs/DVD, or in the Mac App Store. Apple's Command Line Developer Tools are found at the Apple Developer Connection site, or they can be installed from within Xcode 4. Users of Xcode 3 or earlier can install this by ensuring that the appropriate option(s) are selected at the time of Xcode's install ("UNIX Development", "System Tools", "Command Line Tools", or "Command Line Support"). Xcode 4 and later users need to first accept the Xcode EULA by either launching Xcode or running: xcodebuild -license 3) Download and install MacPorts. 4) Open a terminal (Applications > Utilities > Terminal) and run: sudo port selfupdate 5) In your terminal run the command: sudo port install wine-devel 5 1/2) Wait a REALLY long time. This part takes FOREVER. If it craps-out while compiling a package, you should run 'sudo port clean packagename' for whatever package failed and then run 'sudo port install wine-devel' again. 6) In your terminal run the command: sudo port install winetricks 7) One at a time, run the following commands in your terminal: winetricks corefonts winetricks vcrun6 winetricks dotnet20 winetricks fontfix 8) Download the UO:R client and Razor from http://www.uorenaissance.com 9) One at a time, run the following commands in your terminal: wine ~/Downloads/UO_Renaissance_Client.exe wine ~/Downloads/Razor_Latest.exe 10) To play the game, open a terminal and run the following command: wine ~/.wine/drive_c/Program\ Files/Razor/Razor.exe That's it. I never messed with trying to make an icon to launch UO, but I did make an alias in my .profile for it, so you could do that if you wanted. Have fun!