Beegu
An alien stranded on Earth seeks friendship and hope before rescue arrives.
Children have been drawing the same alien for decades — one antenna too many, an unreasonable number of eyes — and children’s books have spent just as long arguing with that picture. The visitor who actually lands in these stories is usually smaller than expected, badly lost, baffled by shoes, and far more interested in snacks than in conquest. Somebody always ends up having to explain Earth out loud, which turns out to be one of the funniest and strangest things a book can ask a child to do.
Drawing from Bookroo’s collection of 468 alien books, our editors chose crash landings, first-contact comedies, near-wordless standoffs, graphic-novel rescues, and middle-grade science fiction that treats its aliens as characters rather than targets. Start with our fixed shortlist of 15 favorites, then browse by age and reading stage — from board books with friendly antennae to novels that quietly ask what “human” is supposed to mean.
An alien stranded on Earth seeks friendship and hope before rescue arrives.
Aliens crash-land and team up with insects to outsmart a curious cat.
A boy and a Martian stranded on the moon must find friendship in the dark.
Three visitors crash outside a small town, and the neighbors decide they must simply be unwell.
A red alien and a blue alien become friends, though both families insist that is impossible.
An alien crash-lands in your book. Can you help it return to space?
Aliens invade Earth for one reason: to steal underpants of all shapes and colors.
An alien teacher hilariously explains the quirks of Earth babies to his class.
A girl signals the night sky for years, and when something finally answers she has to decide whether to go.
A boy falls out of the sky in silver underwear with no memory, no manners, and something dangerous chasing him.
Pressing a mysterious red button opens a portal that swallows a best friend, so she jumps in after him.
A sixth grader discovers her substitute teacher is an alien with sinister plans.
A being made of stardust means to spend a month as a human, misses badly, and lands as a cat.
A girl and an alien mechanic embark on a wild quest to save Earth from invasion.
Raised underground by a robot, a girl reaches the surface and finds a world with no humans in it.
Friendly antennae, flying saucers, and lift-the-flap visitors — sturdy first alien books for ages 0–3.
An alien child receives cosmic gifts and a loving goodnight kiss.
Discover the size of Zagnodd and meet quirky aliens in a cosmic adventure.
Join a space adventure with interactive fun as a bear explores the cosmos.
A lonely girl and a chaotic alien discover the true meaning of family amidst an alien invasion.
Explore a cosmic day with a curious alien toddler in a flap-filled adventure.
Aliens invade a boy's home, sparking a night of mischievous opposites.
Two boys blast into space, meeting aliens. What adventures await?
A chick's world is turned upside down. Can he save the day?
A young boy's unexpected journey to a new world changes everything.
Stitch learns manners in a fun, chaotic journey.
Crash landings, lost visitors, underpants raids, and first contact in the backyard — read-alouds for ages 3–8.
A young boy moves to a new planet with his family and navigates a new school and friendships.
A young chef's alien snacks bring unexpected fame across the galaxy.
A visitor from outer space learns about life on Earth and its inhabitants.
A stranded Spaceman discovers Earth's wonders and a potential new home.
A penguin from Pluto plots Earth's takeover. Can Ricky and his robot stop him?
Zack faces eerie events that challenge his disbelief in ghosts this Halloween.
A boy befriends a monster-like alien who is visiting his school on the planet Nebulon
A boy is excited to show his friend from Earth around his new home on the planet Nebulon
A boy and his robot must stop an alien invasion from Neptune
Blue beings mimic a mysterious creature, sparking hilarity and wonder.
A boy and his robot save the world from an evil space bug who tries to kidnap a princess and take over the planet.
A young boy named Zack Nelson explores the planet Juno with his school's Explorers Club and makes a groundbreaking discovery
Suspicious substitute teachers, graphic-novel rescues, stranded visitors, and full-scale invasions for independent readers ages 6–12.
A cyborg mechanic must uncover her past to save Earth from a lunar threat.
Survive the alien invasion: trust no one, not even those who look human.
A group of kids try to figure out what is happening when their friends and pets start disappearing.
A young barbarian must protect a deadly weapon from a villain in a new world.
A boy genius leads Earth's last stand against alien invaders, unaware of the true stakes.
A reluctant hero must protect Earth from a hidden alien threat.
A school trip to a space museum unleashes rival alien tribes.
A princess and her allies must overthrow an evil queen to end a war.
A hacker's freedom could save Earth from invasion, but at what cost?
A cyborg fugitive and a determined girl race against a ruthless queen to uncover hidden truths.
A determined girl uncovers a secret that could help her become a pilot in a war-torn world.