I have noticed recently that people at Stack Overflow usually move questions related to game development to Game Development SE. So are questions related to game development no longer appropriate at Stack Overflow?
If this is the case,
Questions related to programming, DirectX or OpenGL etc are obviously valid questions on Stack Overflow.
What about questions related to problems specific to game engines, like problems in collision detection, key binding, importing models from 3ds max or maya into a game engine, are they relevant to StackOverflow or Game Development?
What about questions related to scripting, they should be relevant to Stack Overflow in my opinion.
Questions related to game development, strategy, marketing etc are not valid questions on Stack Overflow.
So what are the rules now? Tags specific to game development, game engines &c. are available, and in the form of game development, there is another place for these questions. So what is for Stack Overflow, and what is for Game Development?