I use Sunshine host on my PC to stream to a Moonlight client on my FireTV to play PC games on my TV. It's not perfect, but if you have a Moonlight compatible hardware connected to your TV, you can give it a try and see if it works well enough for you. There's a bit of latency, but it's good enough to play games that work well with a controller already. I think single player survival FPS/adventure/platformer/puzzle type games probably work best that way, and it's not great for multiplayer games cause of the delay.