Works will often have their covers follow a certain design theme. This helps make the series feel intertwined and gives it a visual flare. Sometimes the covers will even provide an Easter Egg or story if you place them side-by-side.
Examples:Anime & Manga
- Every Assassination Classroom volume cover features Koro-sensei's face, the color and emotion varying across each one.
- Warrior Cats:
- Overall, the main English covers follow a certain design: a small boxed image of a major cat from the book with the background depicting an event from the book.
- The alternate UK-exclusive English covers for the series often feature photographs of trees on the bottom with the eyes of a photographed cat above the title.
- The Russian covers have a cover pattern that makes them look like leather books.
- The German, Austrian, Finish, and several other European covers are similar to the alternate UK covers. They feature a photograph of a cat's face with art of cats on the bottom. The Slovenian covers have the same idea but use different photos and art.
- The alternate German and Austrian covers feature a cat on a medallion.
- The Simplified Chinese covers have a retraux look to them. The way they're coloured and the style of the cats looks like a cover for a mid-1900s book more than a 21st century one.
- The alternate Japanese cover features a drawing of a cat on top with a white, silhouetted scene on the bottom half.
- Seeker Bears covers are similar to Warrior Cats covers. They feature art of the bears in the background with a box featuring a close-up of an important bear in the center.
- The famous original covers of the Animorphs series show a character morphing into an animal through a string of intermediate images, against a tinted cloud backdrop. The Animorph books almost always featured the narrating character on the cover and an animal featured in the book (the animal that was the end result of the morph always had cut overlayed from a graphic of the scene depicted in a book). They did like to play with this too. In five cases, the animal in question was not real (and in one case, the animal wasn't real within the universe, but the result of a temporary power boost allowing the character to morph into animals she could make up, the other four were aliens). With four unique morphs, humans were the most featured end result, each one was a unique individual (one human was an older version of the character). Although two books featured a Red-Tailed Hawk and human morphing, the first one (book #3) was human into hawk and the second one was hawk into (same individual) human (book #13). Finally, one book featured an animal that did not appear in the story (human to ant) but was important. In this case, the morph was only partially done to prove that the character could do it. The ant was never the less important as the character's Call-Back to the one time he did it for real and the trauma from the experience served as a metaphor for the plot of the book, making it significant to the story.
- Gemma Doyle: The cover of each book of the trilogy is of a girl in Victorian clothes, as seen here.
- Covers for The Birthday Massacre are purple and always include a rabbit on them.
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