No, original XBOX controllers do not work for the XBOX 360.
Yes, they do. You just have to synchronize them together.
Yes, Dreamgear controllers for XBox have the same design and shape as traditional XBox Controllers.
Well there are many styles of controllers ranging from guitars to regular controllers. But without one of these types of controllers no you can not play.
yes
The Wii, PS4 and Xbox One come with motion controllers. You can purchase motion controllers separately for the PS3 (PlayStation Move) and Xbox 360 (Kinect).
One.
It is 4 controllers on every Xbox 360.
No.
No.
There is no company, except for Microsoft, who issue out replacement Xbox controllers. Microsoft is the sole producer of any Xbox merchandise or accessories, including controllers.
You can find Xbox 360 Controllers on www.ebay.com or go to a local gaming store.