I have just found out the plot of Mario & Luigi RPG 3! I got this from a very reliable friend Kreature Roolz (my best friend)! He is cool. Here it is!!!!!
It is currently thought that the story takes Mario and Luigi across the Mushroom Kingdom to solve the mystery of and find the cure for the Metakoro disease, which causes its victims to swell to huge sizes. At one point, Bowser also tries to kidnap Princess Peach, but he fails. In a second attempt, he uses something called a “Lucky Mushroom” which gives him the ability to inhale everything. He uses this ability to eat Peach, along with Mario, Luigi, Toadbert, and a yellow Bob-omb-like character. As seen in a screenshot, Mario and Luigi must escape from his body. It seems that Bowser can be controlled as the same time as the Bros., so that when Bowser does something (like drinking in a fountain), there will be an effect inside his body (for example, when Bowser drinks, his body is flooded.)
It is also speculated that Fawful may be an antagonist in this game, since some enemies bear a resemblance to him. The Flying Saucers featured in the trailer have green domes (instead of the purple of Shroob Saucers,) and are speculated to belong to Fawful. Looking closely at these UFO-like devices will reveal what appears to be a pair of bluish spectacles, similar to the ones Fawful wears. Also, at one point in the trailer, Bowser is seen chasing a blurry green and red figure riding a flying device. However, it also speculated that the green and red figure could be Prince Peasley.
There are also some kind of iron walls visible on a screenshot with a map. Due to their purple black and red color scheme, it is speculated that the Shroobs could also return. However, in the prequel, it was thought that all Shroobs were destroyed by baby tears. Because the black part of the wall is star shaped, it could also be a Ztar-like wall.
Gameplay
The trailer shown at the conference did not reveal much of information, but one could see a giant spherical Toad rolling on the screen, Mario and Luigi using a Green Shell on a green bug-like enemy, and Bowser using Fire Breath on two tree-like enemies.
Battles seem to have changed little, with Bros. Items making a return. Bowser also has a system of attack items. A new element has been added to battles, a meter at the bottom of the screen with Mario and Luigi’s heads on it. It is currently unknown what purpose this meter serves. Additionally, there are now six categories of attack during battle, as opposed to Mario & Luigi: Partners in Time’s five, or Mario & Luigi: Superstar Saga’s four. No details about the sixth type of attack are known. It appears to be a brown sphere and a white sphere, but that is not certain.
Overworld icons have slightly changed. They now display the health of the character. Bowser uses two buttons in the overworld, X to punch, and Y for firebreath.
It is also possible that Bros. Items and Bros. moves have been merged, or that Bros. attacks will return, since in one image, below the HP number there is a second number next to a Green Shell icon. Also, Mario and Luigi use a Bro Flower in the trailer, and are seen to change into their fire suits.
The Japanese title of the game is Mario & Luigi RPG 3!!!, with a silhouette of Bowser’s head behind the “3″ in the title logo. It is possible that, like in the two preceding games, the title of the game will be related to the gameplay. It is currently speculated that the three exclamation points reference the three playable characters. THANKS KREATURE!!! U ROCK!!!!! Please check the “Mario’s Latest Games” page for the Japan logo. For some reason I could not get it here.
Posted by smasher12 
