While the idea of a "free download repack" for high-end engineering software like might seem like a shortcut to getting powerful CAD/CAM/CAE tools, it carries significant risks and limitations.
NX 10 was released in 2014. If you are specifically looking for it due to older hardware or specific tutorials, keep in mind that modern versions (like the NX Continuous Release) have significantly better performance and newer tools like and Convergent Modeling that may not be fully realized in version 10. siemens nx 10 software free download repack