18. Does Defcon run on other platforms?
Currently, Defcon is for Windows only. Mac and Linux versions will be made available later. The Linux version is likely to use the same data files as the Windows version, and come in the form of a freely downloadable executable that will enable Linux play. That means that if you buy the Windows version, you should also be able to play the Linux version. The Mac version is being published by Ambrosia Software. It is highly unlikely that you will be able to play on a Macintosh using the Windows version. However, all three versions can play against eachother online.
Regarding the Linux version, see this thread for the official word: Chris's word on Linux
Defcon runs fine through CrossOver(http://codeweavers.com) and on real Windows with Boot Camp on Mac OS X. So, lovley Mac people like myself, go enjoy the Windows version until the Mac one comes out.