Well, excuse me. I assumed you meant the iOS store (aka the "app store") because the other app store specifically has licensing clauses incompatible with the GPL. In layman's terms, GPLed programs, like Tremulous, are banned from the Mac App Store.
No need to flip out.
Hello, I am __INSERT_NAME_HERE__ and I hereby establish this fork of Tremulous. For this grand opening I have modifies ONE, count 'em ONE, line of code.
I'm sure Apple likes BSD license, which I understand is similar to the GPL except you don't have to share your changes. If trem wanted to be on the app store that bad, it could probably change to bsd or create a fork with a license that Apple likes. In that link, it says that it would need permission from the contributers, so we would need permission from whoever dev'd quake, zlib, etc, which is possible. (Actually we could do without zlib cus its part of the os.)
There are apps in the app store that contain GPL'd code.
author=Cadynum]not that it would be shocking, but does apple really require you to use DRM on your free, open source products if you want to be in their application store?
If I remember the quide correctly it can be 10 lines of code or something like that, no biggie.