Looks like GoL has a plot over time. Linux adoption is starting to hockey stick, definitely above linear growth, this is getting exciting! I would guess, if it hits somewhere around 5-10% and keeps this hockey stick shape, we'll really start to see the game industry justify giving it more attention.
This will come with both good and bad, I expect it's only a matter of time before some game tries a native kernel level anti-cheat, aka root kit, on Linux.