Hi, I'm one of the streamers / game dev of Feedback Quest 7. I downloaded the game demo from Steam, and started it up (before my stream to test it), but all I see is a grey screen. I can hear the music playing, and when I turn on the Steam Overlay, I seem to be able to see the title screen behind it (or at least the title). But once the Steam overlay is off, it's back to grey-only.
If you release a new version before the end of the jam, please let me know and I'll see if I can schedule it into another stream!