In the electrifying conclusion to this zany isekai adventure, it's boom or bust—and the only way out . . . is up!

After some very bad luck on Earth took his legs and then his life, things finally began to turn around for astronaut Chris when he was reborn as a goblin king on a system-controlled planet. Since then, he's led his incredibly loyal—and insanely reckless—cadre of goblins on a journey of discovery and advancement both as scientists and a society.

Now worshiped and fanatically followed as King Apollo, Chris has given his people electricity, airships, water power, and influence in their world, all with one ultimate goal in mind: reaching space. The launch date is quickly approaching, and the king wants everything ready for liftoff. So of course that's when things start to go into a tailspin, with marauding elves—mean little maniacs, every bit as mad as the goblins—taking out infrastructure, blowing up production facilities, and harvesting goblin ears.

Then, Chris makes contact with a population of star-readers whose wisdom is matched only by their deviousness. And perhaps most shocking of all, he discovers that some of his longtime frenemies are far more like him than he ever knew. But none of that is about to stop him from realizing his dream of walking on the moon. And even that mighty feat pales in comparison to what's waiting for him there . . .

The hit sci-fi fantasy series that's perfect for fans of Dr. STONE—with almost two million views on Royal Road—now available in paperback, ebook, and audiobook!