Early Builds
First Build
There was a heart gauge on the top corner of the top screen indicating Luigi's health. In the final version, it is on the bottom screen.
In the beta Gloomy Mansion, there was no door connecting the Dining Room to the Library.
When Luigi was in the Garage, he had the Strobulb when the ghosts appeared. In the final version, Luigi only had the Poltergust 5000. A ghost also honked the horn of the car to scare Luigi in the beta version.
The knights in the Guard Hall had shinier armor.
In the beta version, the Poltergeist turned the stairs into a slide in the foyer of the Gloomy Mansion. In the final version, it is a Hider.
The courtyard in Gloomy Manor had a small conservatory with a chest containing some coins, and a statue with a sheet on it.
The theme in Gloomy Manor was slightly slower than the final version.
Greenies with Kitchen utensils were in the Dining Room
Second Build
Polterpups did not leave an imprint on the walls.
The scene in which the Polterpup eats the Haunted Towers key was not raining. In the final, it's raining. The camera angle in the scene was also different.
Old Clockworks was originally the second mansion but replaced by Haunted Towers in the final.
The E. Gadd statue in Gloomy Manor was originally out front with a tarp over it but was moved to the backyard in the final.
Third Build
The Toad that was with Luigi in the Secret Mine was red instead of blue.
The snowman in front of the Secret Mine had a yellow scarf instead of a blue one.
There was an extra room in secret mine which contained an ice wall that was covered by a fake image. This could've been the beta design of the Coward's Chasm in the final game or a different area entirely.
