So before we get to what the actual game is, big shoutout to snoweee yesterday for winning the game within a game.
They correctly identified that the notepad in the photo was Twin Peaks merchandise. I'm still in Sydney, but I was working from home yesterday (given how late Wednesday's stream went) so the Twin Peaks notepad was all I had available.
As for the actual game, I'm surprised nobody got it. But you'll get it for sure today. Here's the original hint: