Most Similar Movies to Planet 51 (2009)
If you are looking for movies like Planet 51 (2009), you might like movies tagged with keyword : animation, comedy, science fiction, family, adventure, aliens, space, friendship, humor, children, fantasy, usa, 3d, robot, misunderstanding, cultural conflict, rescue, hero, music, colorful .
Home (2015), Escape from Planet Earth (2013), Space Chimps (2008), Monsters vs. Aliens (2009), Mars Needs Moms (2011), Gnome Alone (2017), Mr. Peabody & Sherman (2014) ... Let's take a look at the following list...

Home (2015)
After an alien race called the Boov take over Earth, a resourceful human girl (Rihanna) becomes a banished Boov's (Jim Parsons) ally.
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Escape from Planet Earth (2013)
Astronaut Scorch Supernova finds himself caught in a trap when he responds to an SOS from a notoriously dangerous alien planet.
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Space Chimps (2008)
Three chimps are sent into space to explore the possibility of alien life when an unmanned space shuttle crash lands on an uncharted planet.
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Monsters vs. Aliens (2009)
A woman transformed into a giant after she is struck by a meteorite on her wedding day becomes part of a team of monsters sent in by the U.S. government to defeat an alien mastermind trying to take over Earth.
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Mars Needs Moms (2011)
A young boy named Milo gains a deeper appreciation for his mom after Martians come to Earth to take her away.
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Gnome Alone (2017)
When Chloe discovers that her new home's garden gnomes are not what they seem, she must decide between the pursuit of a desired high school life and taking up the fight against the Troggs.
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Mr. Peabody & Sherman (2014)
The time-travelling adventures of an advanced canine and his adopted son, as they endeavor to fix a time rift they created.
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The Iron Giant (1999)
A young boy befriends a giant robot from outer space that a paranoid government agent wants to destroy.
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Ice Age: Dawn of the Dinosaurs (2009)
When Sid's attempt to adopt three dinosaur eggs gets him abducted by their real mother to an underground lost world, his friends attempt to rescue him.
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Ratchet & Clank (2016)
When the galaxy comes under the threat of a nefarious space captain, a mechanic and his newfound robot ally join an elite squad of combatants to save the universe.
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Smurfs: The Lost Village (2017)
In this fully animated, all-new take on the Smurfs, a mysterious map sets Smurfette and her friends Brainy, Clumsy, and Hefty on an exciting race through the Forbidden Forest, leading to the discovery of the biggest secret in Smurf history.
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Jimmy Neutron: Boy Genius (2001)
An eight year-old boy genius and his friends must rescue their parents after the adults are abducted by aliens.
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Sherlock Gnomes (2018)
Garden gnomes, Gnomeo (James McAvoy) and Juliet (Emily Blunt), recruit renowned detective Sherlock Gnomes (Johnny Depp) to investigate the mysterious disappearance of other garden ornaments.
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The Smurfs (2011)
When the evil wizard Gargamel chases the tiny blue Smurfs out of their village, they tumble from their magical world into New York City.
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The House of Magic (2013)
The possibly exaggerated origin story of the real life alien bluegrass band, Future Folk, that has been playing for NYC audiences for the better part of a decade.
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Hop (2011)
E.B., the Easter Bunny's teenage son, heads to Hollywood, determined to become a drummer in a rock 'n' roll band. In LA, he's taken in by Fred after the out-of-work slacker hits E.B. with his car.
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Ralph Breaks the Internet (2018)
Six years after the events of "Wreck-It Ralph," Ralph and Vanellope, now friends, discover a wi-fi router in their arcade, leading them into a new adventure.
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Two by Two (2015)
Finny, a Nestrian, and his new friend Leah have to band together to survive the elements and predators after they fall off Noah's Ark.
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