So, one peaceful day, Peach, Daisy and Rosalina were hanging out in Peach's castle. Mario, Luigi, E. Gadd, Cappy and a few other Toads were racing outside in their Karts. Then, clouds formed above the entire kingdom, and through the clouds, Bowser's Airship flew towards the castle. A cannon shot was heard. Rosalina urged everyone to get on the comet observatory. Bowser continued to fire shots at the comet observatory, which made it's systems very messed up. The Oddessey got flung onboard the comet observatory. The Comet Observatory was spinning and flying all around, it hit the ground, and when it got up again, Peach's castle was on the ship! They spun about wildly, like a confused game of Mario Party. As they flew away, they locked in again with part of DK's Forest, E. Gadd's Lab, Luigi's Mansion and part of Green Hill Zone (If you werent tired enough of playing Green Hill)

They finally got into space, but by that point, the damage had been done, and without anyone on the mushroom planet to stop Bowser, he successfully recruited all of Sonic's, DK's, Luigi's and Mario's enemies to take over the forest, all the kingdoms, and all the zones. Rosalina informed the Mario Brothers that they need light, fuel, and a key to access Bowser's castle to beat him. They would use Cat Shines and Shine Sprites to power the lights. (go to the jungle and sonic themed levels) They would use the green stars and power stars to make a key. (Have enough of each and you can play the final level) And they would use power moons and grand stars to fuel the ship. (They are using the Oddessey as a backup engine).

Players will choose whether it will be a singleplayer or multiplayer experience, choose their character(s), and start on the comet observatory and go to the first level. Then they will progress from level to level, collecting hidden Cat shines, Shines, green stars, power stars, power moons and grand stars, all to get through all levels and fight bowser.

Now, while this is a fangame, I am making 50% of the original ideas. All sprites are my own creations, but not all characters or ideas are mine. Thus, 50% of my sprites must be original ideas. Also, levels will be structured myself, and I will not copy official or fan made levels.