Two xbox controllers in game engine?

is it possible to use two xbox controllers at one time in the blender game engine?

Yes I think the BGE supports up to 8 gamepads. I cannot remember where I saw that so that might not be the limit, but I know that it definitely supports more than one.

Yes it is. I think you change the index value, I think each index = a different USB port (used to work like that for me, anyway).