As the title says, is there a cross platform plug-in/add-on/whatever that works with C++ for game development? (Seems funny to ask, but it can't hurt to try).
If not, what Unix plug-in/add-on/whatever there is for C++ in order to develop a fully operational game?
And could you name another of those things with enough functions and libraries for Windows game development in C++?
Well all I ever tried with C++ was DarkGDK some time ago, I did manage to make a Tetris and an arcade game after BSG series.
SFML looks interesting, I'll probably dig in to that since it's free. C4 looks good too, however it's not free.
If you do decide to go with SFML maybe you would be interested in an SFML project wizard I talk about in this thread http://cplusplus.com/forum/lounge/72064/ </shameless plug>