Not seen much action myself but hoping it'll pick up after xmas.
Apple TV is too expensive when compared to others ie Amazon Fire etc that play games just my observation I have an Amazon Fire and a roku. I want the Apple TV but got an Xbox one instead and hell the price isn't that much diff when you consider what you are getting. Apple should have revolutionized tv like they did music and other areas instead they have dropped the ball.
From the gaming side it's all a plus but again that price in comparison to others like all Apple products is too high. This is not my personal opinion I can easily pay it but it's obvious by the customer response. Here is the main problem Apple TV was only 99$ not long ago now it's basically double at 200$. for what to play games on it sorry but Apple customers are too used to playing on their mobile phones too.
Hope it changes and I am going to buy one this month since I already will have a lot of games that are universal. Sorry about the long response I just had this impression a few years ago that it would change tv as we know it and it certainly didn't do that far from it and that prolly has more to do with the monopolies that control the tv industry Viacom etc
By the way someone needs to remind the USA that monopolies are supposed to be illegal just a thought.
The Apple TV is powered by A8 chip, like the one in iPhone 6. So obviously it is not something to compete with PS4 or XBox One in term of gaming.
Outside of USA, the Apple TV does not have a lot of contents to attract buyers. For me, the only reason I'd consider the Apple TV is the AirPlay feature.