The court battle between ZeniMax and Oculus saw Oculus handing over a swift $500 million when the jury found Oculus had violated a NDA, and illegally used code from ZeniMax.
Well, this could just be the start of a legal battle that is much bigger - as ZeniMax has asked the court to block Oculus from using the stolen code. If this happens, it could stop the sales of a massive chunk of games that use the technology. Oculus is of course appealing the case, saying that the prior ruling was "legally flawed and factually unwarranted".
If the judge grants the injunction, Oculus would be forced to write new code for their SDK - replacing the stolen code it is still using from ZeniMax. This would have large effects across the market, as it would hurt the Oculus Rift and Samsung Gear VR products, both of which use the ZeniMax source code.