(Mario) The Music Box -ARC- is a FREE stand alone extension of the game, (Mario) The Music Box, both created by Team Ari. The public demo release of the game will be set to be released on July 24th, 2016.
Below contains Spoilers! It is recommended that players have first played through the plot of (Mario) The Music Box to get a general understanding of the Extension!
General Information Edit
(Mario) The Music Box -ARC- takes place after Possessed Mario fatally wounds Luigi and returns to the mansion alone during their attempt to leave the mansion as soon as the Mario Brothers reunite. Team Ari stated since the "Missing" ending was the easiest ending to achieve and it provides no further story to the game, the extension of (Mario) The Music Box -ARC- will take place during the "Missing" ending route. Team Ari also stated that the route will also provide a little more information on the back story of some of the characters like Alice and Riba, due to their lack of character development at this point of the game.
Choosing your own Fate Edit
The player will be given the option to either resist Alice's control over Mario, or succumb to her. Once one of the decisions has been chosen, the player will be locked into that route and the decision cannot be changed. Both routes will contain 2 special endings, with one of them containing a secret ending. Here are the possible routes to choose from:
Insane route will be focusing on Mario's slip into insanity after the "death" of his brother. Mario will be less prone to danger and life and death situations. If you choose to give in into Alice's control in the first major choice you will be locked onto the "Insane" route. Which will feature endings 1 and 2.
The sane route will be focusing on Mario's struggle with keeping his sanity. He is prone to more danger and more possible life and death situations. If you refuse to give into Alice's control in the first major choice you will be locked onto the "Sane" route. Which features endings 2 and 3. With a possible secret ending and find out about Mario's past.
Information taken directly from the Official Website.