Is this TV good for gaming?

It is a 60 Hz 4K LED set without HDMI 2.1 features, so it is fine for casual console play but not for high-frame-rate gaming. Competitive players should look for a 120 Hz model.

Yes, HDR is listed. Without local dimming the effect is modest, so highlights will not pop like they do on mini-LED or OLED sets.

Can I mount it on a wall?

Yes. It uses a standard VESA 500 x 400 mm mount. At 85 inches it is heavy, so use a mount rated for large TVs and fix it to studs.

The TV, its stand and a remote are the standard contents. Check the listing for the exact accessories included.

Does it have Chromecast built in?

Yes, Chromecast is integrated, so you can cast from a phone or laptop. It also has Wi-Fi, Ethernet and Bluetooth.

Is 85 inches too big for my room?

For a typical living room, an 85-inch set needs roughly 9 to 12 feet of viewing distance for comfortable 4K viewing. Measure the wall and the stand footprint before buying.