Emergency! Calling all tech heads!

My son is OBSESSED with Pac-Man. He learned months ago that sometimes Google lets people play Pac-Man on Google Maps on April Fools. He has anticipated today SO HARD. He got to play it today and of course he wants more. But now he's asleep, and presumably maps.google.com will coldheartedly shut down the Pac-Man option in the next few hours.

I think, OK, let's see if we can fire up the Chrome dev tools when the Pac-Man icon is displayed and see if we can infer what javascript is running to create the game, then try to capture that js (and concatenate the sources if necessary) to save as a bookmarklet. Voila! Pac-Man any day.

But as soon as you open the dev tools, the Pac-Man icon disappears! If I actually click on the icon to start the game, then fire up the dev tools, the game goes away and I'm booted back to the vanilla map. I figure maybe Chrome has some built-in smarts to somehow block my attempt, so I fire up MS Edge. On click, Pac Man icon now says "sorry, gotta use Chrome for this". Ok, I tell Edge to use a user agent string that looks like Chrome. No dice, the "chrome required" message must rely on client-side feature detection.

TLDR: what can be done to access Pac-Man in Google Maps after the G Man stops the party? Asking for a precious boy who tried to bite a tortilla chip into the shape of his favorite video game character tonight and cried when it of course broke into pieces.