More like Enemies

anchored on:science fictionour worldcontemporarymiddle gradenorth america

but

Narrow

Martians, Go HomeNovel
Fredric Brownstandalone novel1955
Humor and alien invasion.
My Teacher Is an AlienSeries
series4 books1989
Adventurous in tone.
“Susan Simmons can tell that her new substitute teacher is really weird.”
from the catalogue
Start with My Teacher Is an Alien →
Agent to the StarsNovel
John Scalzistandalone novel2005
First contact, set in big city.
“There's just one problem: They're hideously ugly and they smell like rotting fish.”
from the catalogue
I Was a 6th Grade AlienSeries
series12 books1999
Science fiction, about aliens, set in contemporary.
“When aliens come to Earth on an interplanetary trade mission, sixth-grader Tim makes friends with the ambassador's son and together they uncover a plot to sabotage the mission.”
from the catalogue
Start with I Was a Sixth Grade Alien →
The Andromeda StrainSeries
series2 books1969
Tense in tone, about plague and pandemic and survival.
“Daniel H. Wilson's authorized 2019 sequel The Andromeda Evolution revisits the same threat five decades later.”
from the catalogue
Start with The Andromeda Strain →
FootfallNovel
Larry Niven & Jerry Pournellestandalone novel1985
Alien invasion and first contact, tense in tone, about survival.
“When aliens travel to Earth from Alpha Centauri, differences between alien and human psychology result in an unprovoked invasion, and the resulting resistance results in the aliens' use of a devastating weapon.”
from the catalogue