April 1

The False Prince by Jennifer A. Nielsen (Scholastic Press, $17.99; ISBN 978-0-545-28413-4). 75,000 copies.

Geronimo Stilton #49: The Way of the Samurai by Geronimo Stilton (Scholastic Paperbacks, $6.99; ISBN 978-0-545-34101-1). 50,000 copies.

Goosebumps: Hall of Horrors #6: The Birthday Party of No Return by R.L. Stine (Scholastic Paperbacks, $5.99; ISBN 978-0-545-28938-2). 50,000 copies.

Horrid Henry and the Zombie Vampire by Francesca Simon (Sourcebooks Jabberwocky, $4.99 paper; ISBN 978-1-4022-6785-7). 50,000 copies.

Peace, Love, and Cupcakes by Sheryl Berk and Carrie Berk (Sourcebooks Jabberwocky, $6.99 paper; ISBN 978-1-4022-6649-8). 50,000 copies.

April 3

The Fame Game by Lauren Conrad (HarperCollins, $18.99; ISBN 978-0-06-207328-0). 400,000 copies.

The Duckling Gets a Cookie!? by Mo Willems (Hyperion, $15.99; ISBN 978-1-4231-5128-9). 250,000 copies.

Warriors: Omen of the Stars #6: The Last Hope by Erin Hunter (HarperCollins, $16.99; ISBN 978-0-06-155527-5). 200,000 copies.

Fancy Nancy: Nancy Clancy, Super Sleuth by Jane O’Connor, illus. by Robin Preiss Glasser (HarperCollins, $9.99; ISBN 978-0-06-208293-0). 150,000 copies.

Kingdom Keepers V by Ridley Pearson (Disney-Hyperion, $17.99; ISBN 978-1-4231-5336-8). 150,000 copies.

Fear: A Gone Novel by Michael Grant (HarperCollins/Tegen, $17.99; ISBN 978-0-06-144915-4). 100,000 copies.

Grave Mercy: His Fair Assassin, Book 1 by Robin LaFevers (Houghton Mifflin, $16.99; ISBN 978-0-547-62834-9). 100,000 copies.

Immortal City by Scott Speer (Razorbill, $17.99; ISBN 978-1-59514-506-2). 100,000 copies.

I Hunt Killers by Barry Lyga (Little, Brown, $17.99; ISBN 978-0-316-12584-0). 75,000 copies.

Mia and the Daisy Dance by Robin Farley, illus. by Olga Ivanov (HarperCollins, $3.99 paper; ISBN 978-0-06-173305-5). 60,000 copies.

Warriors: SkyClan and the Stranger #3: After the Flood by Erin Hunter, illus. by James L. Barry (HarperCollins, $6.99 paper; ISBN 978-0-06-200838-1). 60,000 copies.

Amelia Bedelia’s First Vote by Herman Parish, illus. by Lynne Avril (Greenwillow, $16.99; ISBN 978-0-06-209405-6). 50,000 copies.

Forget-Me-Nots: Poems to Learn By Heart by Mary Ann Hoberman, illus. by Michael Emberley (Little, Brown, $19.99; ISBN 978-0-316-12947-3). 50,000 copies.

Tollins 2: Dynamite Tales by Conn Iggulden (HarperCollins $16.99; ISBN 978-0-06-199225-4). 50,000 copies.

Black Heart by Holly Black (S&S/McElderry, $17.99; ISBN 9781442403468).

Is She For Real? by P.J. Night (Simon Spotlight, $5.99; ISBN 9781442450561

April 10

The Extraordinary Education of Nicholas Benedict by Trenton Lee Stewart, illus. by Diane Sudyka (Little, Brown, $17.99; ISBN 978-0-316-17619-4). 250,000 copies.

The Calling (Darkness Rising) by Kelley Armstrong (HarperCollins, $17.99; ISBN 978-0-06-179705-7). 150,000 copies.

The Berenstain Bears at the Aquarium by Jan Berenstain (HarperCollins, $3.99 paper; ISBN 978-0-06-207524-6). 75,000 copies.

Taken At Dusk by C.C. Hunter (St. Martin’s Griffin, $9.99 paper; ISBN 978-0-312-62469). 75,000 copies.

Belles by Jen Calonita (Little, Brown/Poppy, $17.99; ISBN 978-0-316-09113-8). 50,000 copies. Lexapros and Cons by Aaron Karo (FSG, $16.99; ISBN 978-0-374-34396-5). 50,000 copies.

Book of Blood and Shadow by Robin Wasserman (Knopf, $17.99; ISBN 978-0-375-86876-4). 50,000 copies.

April 12

Remarkable by Lizzie K. Foley (Dial, $16.99; ISBN 978-0-8037-3706-8). 50,000 copies.

April 17

The Brotherband Chronicles, Book 2 by John Flanagan (Philomel, $18.99; ISBN 978-0-399-25620-2). 250,000 copies.

Shark Wars: Into the Abyss, Book 3 by E.J. Altbacker (Razorbill, $12.99 paper; ISBN 978-1-59514-382-2). 100,000 copies.

Herbert’s Wormhole: The Rise and Fall of El Solo Libre by Peter Nelson, illus. by Rohitash Rao (HarperCollins, $12.99; ISBN 978-0-06-201218-0). 75,000 copies.

Mister Death’s Blue-Eyed Girls by Mary Downing Hahn (Clarion, $16.99; ISBN 978-0-547-76062-9). 75,000 copies.

If All the Animals Came Inside by Eric Pinder, illus. by Marc Brown (Little, Brown, $16.99; ISBN 978-0-316-09883-0). 60,000 copies.

The Last Apprentice: Grimalkin, the Witch Assassin by Joseph Delaney, illus. by Patrick Arrasmith (Greenwillow, $16.99; ISBN 978-0-06-208207-7). 50,000 copies.

The Last Echo by Kimberly Derting (HarperCollins, $17.99; ISBN 978-0-06-208219-0). 50,000 copies.

Curious Baby Everyday Shapes Puzzle Book: A Puzzle Play Book by H.A. Rey (HMH, $8.99; ISBN 978-0-547-63232-2). 50,000 copies.

172 Hours On the Moon by Johan Harstad (Little, Brown, $17.99; ISBN 978-0-316-18288-1). 50,000 copies.

April 24

Ascend by Amanda Hocking (St. Martin’s Griffin, $8.99 paper; ISBN 978-1-250-00633-2). 250,000 copies.

Whisper by Alyson Noël (Macmillan/Square Fish, $7.99; ISBN 978-0-312-64156-6). 200,000 copies.

Pinkalicious: Pink-a-rama by Victoria Kann (HarperCollins, $16.99 paper; ISBN 978-0-06-198966-7). 150,000 copies.

Dark Eden 2: Eve of Destruction by Patrick Carman (HarperCollins/Tegen, $17.99; ISBN 978-0-06-210182-2). 100,000 copies.

The Selection by Kiera Cass (HarperTeen, $17.99; ISBN 978-0-06-205993-2). 100,000 copies.

Tyler Makes Pancakes! by Tyler Florence, illus. by Craig Frazier (HarperCollins, $16.99; ISBN 978-0-06-204752-6). 60,000 copies.

Unraveling by Elizabeth Norris (HarperCollins/Balzer + Bray, $17.99; ISBN 978-0-06-210373-4). 100,000 copies.

The Very Fairy Princess: Here Comes the Flower Girl! by Julie Andrews and Emma Walton Hamilton, illus. by Christine Davenier (Little, Brown, $16.99; ISBN 978-0-316-18561-5). 100,000 copies.

The Berenstain Bears and Mama for Mayor! by Jan Berenstain (HarperCollins, $3.99 paper; ISBN 978-0-06-207527-7). 75,000 copies.

Masque of the Red Death by Bethany Griffin (Greenwillow, $17.99; ISBN 978-0-06-210779-4). 75,000 copies.

Rebel Fire by Andrew Lane (FSG, $16.99; ISBN 978-0-374-38768-6). 75,000 copies.

All the Right Stuff by Walter Dean Myers (HarperCollins/Amistad, $17.99; ISBN 978-0-06-196087-1). 50,000 copies.

Gladiator: Fight for Freedom by Simon Scarrow (Disney-Hyperion, $16.99; ISBN 978-1-4231-5101-2). 50,000 copies.

Builder Bugs by David A. Carter (Little Simon, $12.99; ISBN 978-1-4424-2648-1).

The Killing (Cherub) by Robert Muchamore (Simon Pulse, $16.99; ISBN 978-1-4169-9943-0).

The Story of Us by Deb Caletti (Simon Pulse, $16.99; ISBN 978-1-4424-2346-6).

April 26

Vampire Academy: Frostbite, a Graphic Novel by Richelle Mead, adapted by Leigh Dragoon, illus. by Emma Vieceli (Razorbill, $12.99; ISBN 978-1-59514-430-0). 150,000 copies.