There have been clones of Simcity available for quite some time. Lincity distinguishes itself with a decent isometric tile set as compared to the other clones which use a rather spartan top-down tileset. There are binaries available for Windows and packages for a variety of linux distros on the download section of their site. Unfortunately to install on OSX you’re going to have to use Portage. It’s easy enough to install though if you’re not already running it I’m not sure Lincity is the package that will convince you to get it up and running.
Anyway if you’re a fan of the original first generation simcity, Lincity is an aesthetically competent clone and well worth checking out.