3.92 avg rating — 17,650 ratings

"Other than War of the Worlds (which is the obvious choice and has more than enough votes as it is), this book has everything that epitomizes the alien invasion novel, unlike many entries in this list (The Andromeda Strain is an alien virus rather than an invading alien civilization, both Starship Troopers and Ender's Game focus on humans invading the aliens rather than the other way around, etc.)"

3.83 avg rating — 22,941 ratings

3.88 avg rating — 34,170 ratings

4.38 avg rating — 4,248 ratings