Just read this in the FAQ: What about mods? Will there be access to a complete set of SDK tools and/or 100% mod compatibility? Unfortunately, user-created mods are not a component of the Mac version of Civilization V. User mods would require us to build custom versions of the full application ourselves in order to support a limited number of specific mods and still leave others unsupported. Similarly, modding tools are implemented with Microsoft .NET, and would present a significant porting challenge involving total rewrites. Bottom line: There is no way to create a Mac experience that allows for a good end-user experience for user-created mods. Believe uswe tried. .... So I assume this means that the mods we all grew to love and use during our CIV 5 sessions on PC are no longer going to work AT ALL ON THE MAC?!?!? Hello Firaxis!! Your game is pretty buggy and uneven without the countless user mods which enhance the PC version. Thanks for making the experience a bit more frustrating for us.