SMG4: If Mario Was In Animal Crossing is the ninth episode of Season 10 and the five hundred and sixty-third overall to be uploaded by SMG4.
This episode was aired on March 14, 2020.
Mario tries to live a new life, the Animal Crossing way.
The episode begins with Mario excited to take a vacation to Tom Nook's deserted island. Then, Rover asks Mario if he is a boy, or a girl. Mario then continues by blasting him with a cannon. This causes the plane to crash onto the island. Mario then runs into Isabelle and Tom Nook. Tom Nook then claims that this is where people come to die. Mario claims that is fun. Tom Nook then shows Mario around, Showing a building with a clock, a store, a prison, and then a lava pit filled with skeletons. Isabelle then asks Mario where he wants to live. Mario chooses a good location, which is be right on Cube the Penguin's house. Then Tom Nook yeets Cube's house and then replaces it with a cardboard box, and later gave Mario a lamp, and what seems to be a old-fashioned radio. Mario has to earn money to pay off his debts.
He attempts by selling his brother, but there are no customers nearby. Then he decides the best way to make a lot of money is sell things wherever Mario could find to pay Tom Nook's debt. He would get fruits by shaking off a tree. He keeps shaking it until he caught a beehive. Mario tries to escape the bee when he runs right into Static. He would later use the supplies he stole from Static. He uses the net to catch Derwin, and later use him as fishing bait to catch a shark.
Mario discovers a Fossil and takes it to the museum and donated it to Blathers, Just as Blathers takes a look, he suddenly realizes that Mario's Fossil are skeleton remains of a deceased villager. Blathers contacts the police until Timmy and Tommy attacked him, and later asks Mario that Tom Nook want him to run errands for the citizens. He starts off with Scooty, who told him to deliver the medicine to one of his sick friends, only for Mario to sell it to Tom Nook. Then he was asked by Pierce to get a big-sized furniture, only to steal it from Kody's house. After he gave Aurora an apple, she offered him a flower, but Mario rejected that gift, due to Bill gave him a piano. Resetti asked Mario if he have seen his brother, only for Mario to remember that he knocked Don unconscious. Only for Mario to lie to Resetti.
After his mortgage been fulfilled, his house has been upgraded. But Tom Nook made a new mortgage for him with the total of 9 billion bells. Mario decides to go to Nook's store and purchased everything, including Coco. He then steals Cube's new house and plants his own spaghetti tree. Then he asks Lily to help him build a Froggy Chair.
Meanwhile at Mario's House, Luigi receives a postcard from Mario during his vacation on the island and receives a piano.
Mario managed to get away from the monster, only to run into Resetti, who is angry that he killed his brother. He throws a pickaxe at Mario's pingas, screaming in pain. Mario is begging and reasoning Isabelle and Doomguy that is just a prank, only for Mario to get kicked off the island.