One of the issues cropping up in the migration from Xorg to Wayland is the desire to capture part or all of your screen for recording and/or streaming to others - in many cases, applications designed for Xorg simply capture a black screen, with few workarounds.
However, for games and applications that can run with the Vulkan API, there's a new plugin from David Rosca (nowrep) for OBS Studio called obs-vkcapture (OBS Plugin Forum | GitHub) that aims to work around the issue and get your gameplay ingested directly, bypassing the built-in Xorg 'Window Capture'.
Bonus - it should even work under Xorg, provided you have a new build of OBS with EGL support and pass it the environment variable:
Similarly, you'll need to run your game (or other Vulkan application), one at a time (e.g. in your Steam launch options), with:
Now, this is a very new development (nowrep's initial commits here are barely 4 days old as of writing), but in my initial testing last night, I managed to play a 4 hour session of 7 Days to Die (using the experimental Vulkan backend), while streaming and recording it just fine. That said, I did compile and install it by hand myself, on a git master build of OBS, and it is of course still under active development, so the usual caveat holds here: Your Mileage May Vary.
Still, they're looking at potentially adding OpenGL support in the future, so this is definitely one to watch.