Alone by Scott Sigler
Pawns in a millennia-old struggle, the young people known only as the Birthday Children were genetically engineered to survive on the planet Omeyocan—but they were never meant to live there. They were made to be “overwritten,” their minds wiped and replaced by the consciousnesses of the monsters who created them.
Em changed all of that.
She unified her people and led a revolt against their creators. Em and her friends escaped an ancient ghost ship and fled to Omeyocan. They thought they would find an uninhabited paradise. Instead, they found the ruins of a massive city long since swallowed by the jungle. And they weren’t alone. The Birthday Children fought for survival against the elements, jungle wildlife, the “Grownups” who created them . . . and, as evil corrupted their numbers, even against themselves.
With these opponents finally defeated, Em and her people realized that more threats were coming, traveling from across the universe to lay claim to their planet. The Birthday Children have prepared as best they can against this alien armada. Now, as the first ships reach orbit around Omeyocan, the final battle for the planet begins.
Em has created an alliance between her young human survivors and the aliens on the planet. But outlier aliens continue to attack. And her own people are changing, growing more aggressive. Meanwhile, new ships are arriving and there seems to be nothing that can stop them.
Alone is the final installment in a thrilling YA, science fiction trilogy. As everyone’s aggression escalates, Em eventually discovers the cause. But with an enormous invading army and the human ship still being led by Em’s malevolent creator, Em is running out of options. This finale is packed with action, drama, mystery, and suspense. It’s a much larger novel than the predecessors, but it’s still fast-paced. There are many twists and shocking turns that build to an exciting and satisfying ending.