If I’m not mistaken the intro of the game actually plays in the E3 demo.
☆ NintendObs Event – Nintendo E3 2019.
At NintendObserver, the comments are on Discord.
Click on Community to learn more. 🙂
…
…Wanna play? Buy a Switch.
And if you’ve already got yours, click on Luigi’s Mansion 3 for everything you need to know about the game. 😀