nVidia drivers are copyrighted. Linux Mint, and most other Linux Distros, do not use proprietary 3rd party drivers due to copyright laws. They use legal alternatives. So, what that means is your nVidia card should work perfectly in Mint, but may not have all the factory bells and whistles needed for Gaming.You could get the TarBall from the nVidia website, but the installation is very tricky (as you already discovered). The good news is: They are also included with Mint, and DO install very easily. I just can't remember where I found them. I do remember that I discovered them while exploring Mint, and if you do the same you will find them, too. This is part of the learning experience.