Tetr.io
This is highly subjective, but I spectated a few games and the amount of shaking that is happening seems excessive to me. Maybe the kids are impressed by all the shaking going on, but I find it hard to focus when the thing I'm focusing on keeps jumping around.On a related note, I think screenshakes are extremely overused in indie games. It's so cheap to add that it cheapens the games.  - Threw a grenade? Boom. screenshake. 
  - Shot a bullet? Boom. screenshake. 
  - Picked up an item? Boom. screenshake. 
  - Let out a big sigh? screenshake. 
  - Physically shook your display? Double screenshake.
  - Rolled your eyes at all the screenshakes? There's a screenshake for that too

In StarCraft, the screen didn't shake even if you dropped a nuke on someone else's base. I guess the good folks at Blizzard at the time didn't watch that one GDC talk, "Juice It or Lose It", so they had to come up with a different way to make a good game.