Luigi's Mansion 3 - Luigi rescues Mario! - YouTube
Nintendo is buying Luigi's Mansion 3 studio Next Level Games | VG247
In the Luigi's Mansion 3 reveal trailer, there are pizza boxes that say "since 1983", which is the year Mario Bros. released and Luigi's first appearance. : r/GamingDetails
LEGO® Super Mario™ Luigi's Mansion™ Sets | Official LEGO® Shop GB