Wine provides its own versions of various Window system DLLs. Wine also has the ability to load native Windows DLLs. Attempting to call into the Windows kernel directly is unsupported. You can supply your own versions of the DLLs, which may be enough for certain Windows games or software, but not all, and rarely better than in Windows itself. What if it is true that games that have versions for Linux, have a better performance than the Windows versions in Windows. But if you use the version of Windows in Linux with Wine, you will see that the performance is far from what it has in Windows itself , or the Linux version directly. Windows applications need Wine libraries to work and Wine cannot replace all of them optimally, so it is questionable that they work with the 'imitation' Wine libraries than with the original Windows DLLs, at least not in current complex games , without resorting to the original licensed DLLs.