Ive been too a couple of sites and none seem to give me a proper answer, with OpenGL, can you actually program a full working game WITH multiplayer, or even a MMORPG. As I thought OpenGL was just a graphics API so how do yo get multiplayer with it or will I need to learn DirectX for multiplayer. Im asking this question because im not sure if I should continue learning OpenGL if I will need to learn DirectX later anyway for other parts of multiplayer programming. And if you can make a fully functional game in OpenGL with multiplayer then how? can someone please suggest some site or tutorials I could see?