Look at my other post, I've got it working : https://www.reddit.com/r/ShieldAndroidTV/comments/8gdtwg/pubg_mobile_octopus_got_it_working/?utm_source=reddit-android

Pubg Mobile doesn't support game controllers iirc

I've heard that PUBG is very playable when using a screen/controller mapper.

I've just tried to install the Fortnite installer on a new AndroidTV device (Oreo operator tier), basically as a cool test of a Bluetooth controller. I've got an Epic account and an invitation so have sideloaded the official installer grabbed from my phone. When I install I get a message:

C:\Users\iriminage\Desktop>adb install "Fortnite Battle Royale_v5.2.0-4276112-Android_apkpure.com.apk"

adb: failed to install Fortnite Battle Royale_v5.2.0-4276112-Android_apkpure.com.apk: Failure [INSTALL_FAILED_NO_MATCHING_ABIS: Failed to extract native libraries, res=-113]

I'm thinking this may be because my puck has a Broadcom chipset. Can anyone advise please?

Yes. Lots of people use Gamestream.