“Plenty of twists to keep readers guessing. Every Ultraball game is tightly written with great clarity... an intriguing hybrid of football and sci-fi with plenty of butt jokes.” — Kirkus Reviews
“Chen’s debut delivers a smart and subtle exploration of socioeconomic inequality. Sf and sports readers alike will enjoy the futuristic dystopia Chen has created. Fans of Mike Lupica, Dan Gutman, and Tim Green looking to get their feet wet in sf should be directed to this series opener.” — ALA Booklist
“Fart jokes and cheesy banter makes this well suited for a middle school audience.” — School Library Journal