I can answer that as I am at the moment dusting off cobwebs and re-acquainting myself with linux again.
I too am a gamer, and my computer is to me, my gaming platform of choice.
Now as to gaming on linux, the good news is that Steam now has a native client for linux and games are made to run natively on linux, such as Double Fine's Brutal Legend, Shadowrun Returns, and a few others.
However, devs, especially those who are crowd-funded (kickstarter) are made aware that if their games run on linux, more would donate. This was especially true for RSI's Star Citizen / Squadron 42.
In fact while funding was active, many made it known that they would increase their pledge (some even only pledge) if the game ran on linux.
And hence a linux version is being planned.
Now coming back to the present.
Gaming on Linux is still spotty at best. While you can run Steam-Windows on linux with Wine, I have recently done so, and ran Skyrim on linux, its by no means as satisfactory as playing it on windows. For one thing, there are clipping issues, and crashes happen on and off. Also, my ENB mods don't seem to work or rather work oddly if at all and I loose my Dolby surround sound, just getting stereo on Linux.
I am still intending to stick with my project to build a Linux gaming box (I use several hard drives each with pristine OSes, Linux and Windows, installed on each so that I can UEFI boot into whichever I want to at the time) to play *and support* Linux native games on steam.
Bottom line, AAA Gaming on Linux is in its infancy, actually more like gestation period. Windows still have a strangle hold on AAA titles until sheer numbers on Steam-Linux give devs a reason to develop for Linux natively.