Quoted from MT45:Thanks for the follow up and yes, that is exactly what I’ve done with my test samples. I’ve got 4 of them setup through routines on my Echo Dot. I can simply say “Alexa - Turn on Spiderman” and just that game comes on. If I say “Alexa - Let’s play pinball” then the 4 test units all come on. “Alexa - Game Over” shuts them all down at once. Right now they work like a champ. Hoping this will be the same long term
So my poor Alexa must think how boring I am. I just say "Alexa, Arcade on" or "Alexa, Arcade off" when I want to turn all the machines on or off. Now that I've read your post I need to change what I say, yours is so much more fun 
! Glad you posted!
Done!
