I think this event by Mark_MSX and others deserves a thread here. Day 1 just passed but today is day 2. Part in-person, part online.
Today's schedule: https://horaro.org/shmupslam5/sunday?key=No
Yesterday's schedule: https://horaro.org/shmupslam5/saturday?key=No
Yesterday's event on his Youtube-channel:
Shmup Slam 5 IRL Edition Live Shoot Em Up Runs! DAY 1, PART 1
Shmup Slam 5 IRL Edition Live Shoot Em Up Runs! DAY 1, PART 2
Today's event:
Shmup Slam 5 IRL Edition Live Shoot Em Up Runs! DAY 2!
Anything catches your interest? It's rare to see live demonstrations of some of these games.