The minimum spec listed for the AppGameKit gives the operating system as Windows Vista or Windows 7. At work we are still running Windows NT. Does anyone know if the kit can be run on NT?

There's a free trial. I would recommend downloading the trial and testing.

However, if it's not listed on the minimum spec, then it's unsupported. Which means it may work now but isn't guaranteed to keep working in the future.

The minimum requirements according to the faq are:

Intel Atom N450 1.66 ghz or higher Windows XP Service Pack 3, Windows Vista or Windows 7 1 GB RAM or higher OpenGL compatible graphics 1 gb free disk space

http://www.appgamekit.com/faq.php#q28

You can also download one of the posted demos (e.g Box2D demos) to see if the runtime files work on NT.