Problem is the voltage regulation the putt-putt generators have may cause issues with your games. Just something to think about.

Anyways figure 250-300W per game, do the math, and you have your answer.

Just get yourself some golf cart batteries and a true sine wave inverter. Honda makes some very nice, quiet generators. The Honda EU2000i probably could run at least 5 if not more.

It all depends on how "clean" the power is.

An EM might not care, but the Hobbit's computer would.

Some generators are inverter type and usually say "computer friendly" on the sticker.

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I'd just have an electrician install a few extra 20A circuits on the back of the house/garage.

For the price of a single rental, you could have permanent clean power for your parties.

Each 20A circuit can run 6 games.

You're gonna get 16.67 amps or about the same as a 15amp single pole breaker. Should be enough.

I have the 1000i it is more of a loud hum and you can stand next to it and carry on a normal conversation. Should'nt be a problem for the neighbors.

Measure the width of the backboxes and add an inch of buffer space between them. At least two inches if you have system 1 games where the backglass swings on a door, rather than lifts out.

Backboxes are generally about 27" wide.

So, if you assume 27" x 4 games + 3" of buffer = 111" = 9' 3", leaving about 9" to spare.

Are you going to have 3 walls of the tent covered to help protect against sunlight and rain?

I have the same 1000i Honda. Works great, have taken pins on many camping trips & never an issue.

Now that pinball dedication !!!