"Charlie Laird, who learns fear will eat you alive if you feed it, makes an impression, and...readers will want to accompany him again."--The New York Times Book Review, on the English-language edition
"Coraline meets Monsters, Inc. in this delightfully entertaining offering from actor [Jason] Segel and co-author [Kirsten] Miller."--Publishers Weekly, on the English-language edition
"[Nightmares!] succeeds at scaring and amusing in equal measure...[It's] sweet, charming, and imaginative."--Kirkus Reviews, on the English-language edition
"Segel...and Miller build an entertaining, cartoony world full of scary (but not too scary) monsters, silly jokes, plucky kid heroes...with a promise of adventures to come."--Booklist, on the English-language edition