Playing some games on my 55 tv using my Nexus 5 as a controller. Running Android 5.0 Lollipop (final developer preview) & a Chromecast.\r
Android 5.0 has Googlecast (Chromecast) support built in, allowing not only casting but mirroring as well. Now, nearly any game you install on your device can be played on a much larger screen (the proper way.)