https://www.pcgamer.com/a-new-steam-app-will-stream-games-to-tablets-and-tvs-without-a-steam-link/

Valve announced today that two new phone, tablet, and TV apps are on the way, and together they'll allow Steam users to stream their libraries of games and videos to Android and Apple devices without any extra hardware. 

The first on the way is the is the Steam Link app. Like the Steam Link itself (the little streaming box Valve released in 2015) in software form, the app will allow Steam users to stream their games to Android-powered TVs and Apple TV boxes, as well as iOS and Android tablets and phones. I'm not sure how much I want to play Rocket League on my phone (Chris recently used streaming software to play Kingdom Come and Quake Champions on his phone, with mixed results), but I'm tempted to try.