"While Wine does a great job at running most Windows applications under Linux, certain games sometimes just won't work. Call it bad programming, call it faith, but the fact is that some applications refuse to accept Wine. The guys over at Transgaming noticed this and used a hole in the X11 licensing to create a proprietary fork of Wine. But the developers didn't claim they invented the warm water, and initially called their 'version' WineX."
Read on at Bit Tech.