4.26 avg rating — 127,286 ratings

"incredibly creative take on the Sci-fy genre and in a way that doesn't seem to need too many "gimme's" in terms of science capabilities"

4.37 avg rating — 74,675 ratings

"(Cont.) incredibly creative take on the Sci-fy genre and in a way that doesn't seem to need too many "gimme's" in terms of science capabilities"

4.40 avg rating — 65,040 ratings

"(Cont.) incredibly creative take on the Sci-fy genre and in a way that doesn't seem to need too many "gimme's" in terms of science capabilities"

4.42 avg rating — 1,300,410 ratings

"breathe of fresh air in that that the hero is a scientist, the protagonist is a planet, and his adventure and weapons are all science and math.. no need for combat, guns, blood spread.. On top of all of that, its an amazingly funny and engaging story"

really liked it 4.00 avg rating — 125,545 ratings

"like 2 books in one. 2 separate adventures, the first ends at the middle of the book and lays way to a whole new storage based on the first. it could have been a part 1 / Part 2 book, but together it was good and great use of realistic natural physics and realistic solutions. This story really only needed a few "gimme's" in terms of science capabilities, which was ok as the storary was good enough i wasnt worried"