I used a Wifi switch plug and plugged a power bar into it. The power bar was connected to 4 games .

When you hit the switch on your phone (or told Google or Alexa to "turn on pinball games") on they came.

I found that I liked turning on one game at a time - so eventually I hooked each pinball machine up to its own separate WiFi switch. Same process.

Then I just linked the switches to a hub. If I go downstairs I can voice activate each machine - "Hey google turn on ACDC" , etc. or I can say "Hey google - pinball time" and the hub turns on all machines at once when it hears that command.

The one thing you might have to consider is the in-rush current spike a master switch would cause. Each machine may draw a lot of current when it is turned on, and this could cause the circuit to trip at the breaker.

With the amount of machines you have, it may not be a concern though. You could always test first by plugging everything into the same surge protector and flipping that power on.

I worked in an arcade and the entire place was switched on & off with Breakers. Shouldn't be a big deal...as long as they're not 10amps or something.

“Alexa, turn on pinball”

Lots of info but tough to search...hopefully something in there that helps you

https://pinside.com/pinball/forum/topic/wifi-enabled-smart-plugs

https://pinside.com/pinball/forum/topic/how-do-you-turn-your-games-on-and-off

https://pinside.com/pinball/forum/topic/power-on-off-all-machines-simultaneously

https://pinside.com/pinball/forum/topic/smart-button-or-home-assistant-to-turn-on-games

https://www.amazon.com/gp/product/B07G95FFN3/ref=ppx_yo_dt_b_asin_title_o02_s00

Just bought 2 of these. Individually addressable outlets. Name them in the app. Or group them all and just say turn on pinball. Fantastic.

I have three smart Amazon plugs ( I might expand it to 4). I use it for 9 (7 on one 15 amp circuit) games. To keep the current spiking, I set a routine with the Alexa app. I say "Wake word, Let's play pinball" and it then will turn on one plug, wait 10 secs, then another, wait 10 secs, then another. I also have it saying dumb things...

My arcade has 8 20 Amp circuits. Each 20 Amp circuit has its own light switch.

These products run over the neutral as to not slow down your wifi.

And because they run off the neutral, if your wifi is down, they will still work. AND, there is no lag, because it's on the neutral.

https://www.insteon.com/

Just out of curiosity...why complicate a pretty easy straight forward process? I simply walk over to the machine I want to turn on and flip it on. Is there a benefit? Do you gain some surge or brown out protection by hooking up a middle man switch? Honestly not knocking anyone, just trying to understand the thought process here. I have a friend that turns on his entire room when he only plays one machine. He said he likes the atmosphere it creates. I tend to fall in the why turn it on if you're not going to use it. Saves power and wear etc etc....

You'd be amazed at how many people find it hard to turn on a spike machine these days since the moved the switch.
These seems shockingly recockulus, but must be true with all the cries and complaints. We must remember in every hobby there are a large % of obese and/or TRex offspring.

I have 20 machines in my basement.

I very rarely play just 1. I like being able to hit the keypad and they all come on.

If I’m strictly working on 1 machine, I can manually turn the outlet on or I can turn it on with my phone.

With the keypad, I also have different lighting programmed in. I have an all on for when I’m working on a machine, pinball lighting when it’s dark out, pinball lighting when it’s light out, pinball lighting with a separate bar area.

Wow, I have not seen those before, that is a slick product, thanks for posting that. I'm going to try that out.

I just plug the smart plug into the wall and then run a power strip from the smart plug to control about three to four games. I then stagger them with a routine. They are not all on one circuit but most are and I haven't tripped a 15A circuit breaker yet.

To the question about why not turn them on one at a time there are many reasons other than lazy or obese owners. That answer assumes that all the switches are in the same location. That is the case with about 29 of my pins. The pin that I can think of of the top of my head is different and not reachable from the front is my Revenge from Mars. Talking pins that is one reason. For me the other reasons are the 30 arcades we have from cocktails to caberiet to full size machines. The stupid power switches are on the bottom back left inches from the bottom and some are on the top toward the front, some are at the back. Most of the cocktails are on the bottom of the machine and lifting it to hit the switch is ignorant.

For me the pins I wanted to turn on one at a time and still can but the arcades drove me to switch all the outlets. I am running 6 machines per circuit on 30 amp breakers through a 30 amp switch. I just turn them on one at a time from the doors on each end of the room. I think the Wi-Fi outlets are cool but are a cost I did not want to spend because I do not use voice commands or online control for anything that does not need it. Personal preference to keep my stuff manual.

I set up an Alexa routine using smart plugs so when I say let’s play it turns on one or two games waits 5 seconds, repeat … on until they are all on.