This is the most accurate answer. I have found Nobara to be everything I could ask for gaming.
I might add that, if he also wants a normal desktop experience, separate from gaming, he should consider trying Zorin or Mint.
Iirc, Zorin comes with nvidia/amd drivers already installed and the experience is close enough to Windows that he might stay on Linux.
I have found that sometimes, old games run better on linux via Lutris than on Windows. If it’s a 16 bit game you should give it a try. If it doesn’t work, VM might be your only answer.