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+For the moment, the game is tied to Windowns and the Windows build system, so you'll need to run Visual Studio/Windows in a virtual machine. 
+
+### Mac
+
+1. Download Virtualbox from here: https://www.virtualbox.org/wiki/Downloads
+
+2. Get a Windows 7 virtual machine instance from here: https://github.com/xdissent/ievms
+
+    ```bash
+    curl -s https://raw.githubusercontent.com/xdissent/ievms/master/ievms.sh | env     IEVMS_VERSIONS="10" bash
+    ```
+
+    (This will download ~15GB of files onto your machine)
+
+3. In Virtualbox, boost the memory in the VM to 1500MB or more. Open "Settings", then "Shared Folders", then share your OpenRCT2 folder into the VM. Though I had trouble having the VM write back to that folder, so you may want to do a git checkout inside your VM and just edit there exclusively.
+
+3. In Virtualbox click "Start"
+
+4. In the VM download Visual Studio 2012 Express from here: http://www.microsoft.com/en-us/download/details.aspx?id=34673 (just google "visual studio 2012 express"). Run the smaller .exe which will open the ISO and extract it in your VM
+
+5. Open Visual Studio 2012 Express. Click "Open Solution", navigate to OpenRCT2 folder, click the "projects" folder and open the solution.
+
+6. Click "Build"
+