I'm still using Pentadactyl, which is incredible, but it's almost certainly doomed. You'll need to use the signed version on github: https://github.com/willsALMANJ/pentadactyl-signed You might consider Vimperator, which is similar, but inferior iny opinion. It has better support, though, and is more likely to survive into the future.
If you're looking for something simple, VimFX works, but it's too basic for me. Not sure of the future of VimFX.
Linux gaming is getting better and better. Yes, we have a few sacrifices to make in the form of not getting to play every mainstream title, but many of the ones worth your time have great Linux versions, and if not, they might run well in Wine.
I wiped Windows nine months ago and installed Arch. The only things I missed were Dark Souls and Insurgency.
I found out a week ago that Dark Souls runs like butter in Wine, and Insurgency just got native Linux support the other day. I am a happy Linux gamer.
As for the titles that choose to avoid supporting my operating system, well I guess I won't be supporting them with my dollars.
If you're looking for something simple, VimFX works, but it's too basic for me. Not sure of the future of VimFX.