As one data point, Age of Empires 2 DE takes up 13.7 GB on my desktop, so you'd probably be fine with even the smallest one (though I'm sure it will still fill up quick!)
Form factor is another consideration. You'd probably still want a dock and mouse/keyboard. I'm not sure how well that game would play on a controller.
Form factor is another consideration. You'd probably still want a dock and mouse/keyboard. I'm not sure how well that game would play on a controller.