I've noticed a new button under apps on my main facebook page (left hand side).
I now have a games feed button. I don't know if I was just unobservant (hopefully playing GOT will help with fixing that problem).
I thought I would point it out in case it helps someone. I personally have links for the feeds of each game I play so I can find those posts quickly, but a general games feed will come in handy from time to time as well.