Worlds: Mushroom World, The people of Mushroom Kingdom have been changed into monsters by the Shroobs (This includes Princess Peach), Shroobs have also conquered Kong Island, putting a once insignificant Kremling known as Kremperor in charge, Bowser's Castle is dominated by the Goomba People and there shroob counterpart, Shrooblets, and A Space Station Orbit the Mushroom World, Celestial Void, the place that is eventually revealed to be the home of the universal creators, the omniscibeings, it is composed of the lairs of each omniscibeings, it contains portal known as worm holes in one section which are used to travel to other parts of the Universe by more intelligent beings. It consist of the Quarry of Phyz, The Abyz, The Hall of Holz, The River of Solz, The Domain of Bioz, The Celestial Core, Archeasphere, and the Cave of Chemz, the Celestial Void is the main hub of the adventure, The Shroob Planet, the true home planet of the shroobs, despite the nature of the shroobish people, the planet is anything but barren, having many ecosystems and other zones, Other World, these worlds are usually gotten to by accident, they include many random planets including Nauts-6, Home of the X-Nauts, Dimentious, The New Home of the Defeated Dimention
Main Protagonist and Controllable Characters: Mario, the mute hero of Mushroom Kingdom is sent to the mysterious dimension known as the celestial void and must find his way use the worm holes in void to travel to several regions of the galaxy and confront the shroobs to save his galaxy and the entire universe from being crushed under the might the Shroobish Empire and their secret leader Battle Shroob/Goomsos, Yias, a amnesia stricken being composed of energy, who takes the place of Luigi in Mario's Journey, he has the ability to change forms, but generally takes the shape of Luigi to benefit Mario in his quest, later in the game the player finds who and what he really is, Omniscibeings, Werm, Verz, Bioz, Phyz, Anomalus, Solz, Chemz, and the Yin aspect all help Mario and Yias in there quest, near the end of the game, you most fight each in combat, and once you beat the game after you defeat all the X bosses in a challenge node like area, the ultimate boss can be fought
Main Antagonist: Shroobs (Battle Shroob [who is really is/controlled by Goomsos, leader of the ancient Goomba rebellion against the ancient Mushroom Kingdom, creator of the Dark Star, Teacher of Cackletta, and Possessor of the Yang Aspect of the Celestial Core in the Celestial Void, He desires to use the Shroob's to retake the Mushroom World for the Goombas, He also desire to use Luigi's Dark Side to Completely control the Yang Aspect (He is seen most of the time as Battle Shroob)], King Shroob, gullible leader of the shroobs, his advisor, Battle Shroob uses him as a figure head to dominate the Mushroom World, using the Shroob fleet inside Bowser's Castle and his own massive army of Shroobs, he conquers Mushroom Kingdom for his late daughters and then resides inside Castle Shroob for the rest of the game
Bosses: One Time Bosses (Shritan, Shroob Orchestra, Peach, Sir Grodus, Magnus 3.0, King Otgo, Pirahnisas Planet (Fought By Giant Bowser who finds himself on the Planet), Giga Piranah Plant, Dimentio, Anshroid, Shrooboid Miner, Bioz, Chemz, Solz, Verz, Phyz, Luigi's Soul, Goomsos, Yangsos, Luisos, Prince & Princess Shroob, King Shroob & Battle Shroob, Cryoshroob, Flema and Cicl, Shrog & Agrishroob, X-Naut Agent, Admiral Shroob, Aero Shroob, Shrowser (The Only Fight Bowser Has In His Small Form), Fawful & Cackletta (Optional), King Goom & Queen Shroobet), Recurring (Kremperor (2 Times), Battle Shroob (About 4 Times), Werm (3 Times), Anomalus (8 Times), Bowser (Unknown Amount of Times)
This is my idea. Sorry if may seem difficult to read, I just typed it down and didn't even try to read it. It may seem random but it would entertain me.