Here’s the official description and story from Luigi’s Mansion 3 from Nintendo:
The game would be released not too long after the release of the new Nintendo Switch Lite that will be hitting stores on September 20th, 2019!
Wield the upgraded Poltergust G-00 to slam and blow away the ghosts’ defenses, or summon Gooigi, an all-green doppelganger that can help Luigi overcome obstacles he can’t get past alone. Interchange between Luigi and Gooigi as one player, or grab a friend and control one each. For more frenetic multiplayer action, race the timer to clear various objectives on a series of floors in ScareScraper mode. ScareScraper mode can be played online* or locally with up to eight players on four Nintendo Switch systems (additional games required; sold separately).
Features
- He may still be cowardly, but Luigi has more tools and abilities at his disposal than ever before. Master Luigi’s new powerful moves of Slam, Suction Shot and Burst Team up with Professor E. Gadd’s latest invention, Gooigi, an all-green doppelganger able to slip through tight spaces, walk on spikes, and otherwise help Luigi overcome obstacles he can’t get past alone Interchange between Luigi and Gooigi as one player, or grab a friend and control one each at the same time Explore the Last Resort, ascending through its differently themed floors full of quirky contraptions and haunting enemies Race the timer with up to 8 players** to clear objectives on a series of floors in the ScareScraper
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