Part of the spell has already been broken.
The first stones have begun to crumble.
In Artie Kingfisher’s world, wizards named Merlin, fire-breathing dragons, and swords called Excalibur exist only in legends and lore—until the day his video game Otherworld springs to life. 
You are special, Arthur,
Says the mysterious message in his game. 
In one week’s time you will come to me at the it.
Cryptic clues lead Artie to a strange place called the Invisible Tower, where he discovers that nothing in his life is as it seems. Artie is none other than King Arthur, brought to life in the twenty-first century. Artie has won the battle in the virtual Otherworld—now the key to saving the real Otherworld lies in his hands as well.
Green dragons, hungry wolves, powerful sorcerers—suddenly Artie must battle them all as he wields Excalibur and embarks on a quest worthy of the Knights of the Round Table. With his sister, Kay, by his side, Artie steps into the Otherworld—straight toward his destiny.

Otherworld Chronicles: The Invisible Tower (Otherworld Chronicles, 1)

Children's Books

Johnson-Shelton, Nils

Literature & Fiction

Harpercollins

In Artie Kingfisher's world, wizards named Merlin and fire-breathing dragons exist only in legends—until the day his favorite video game, Otherworld, springs to life.
You are special, Arthur, says a mysterious message in the game. In one week's time you will come to me at the IT.
Cryptic clues lead Artie to a strange place called the Invisible Tower, where he discovers he is actually King Arthur, brought to life in the twenty-first century. Artie has already conquered the virtual Otherworld—now it's up to him to save the real Otherworld as well.
Magical dragons, hungry wolves, and powerful sorcerers await as Artie and his sister, Kay, embark on a quest worthy of the Knights of the Round Table.

Otherworld Chronicles #2: The Seven Swords

The thrilling, action-packed sequel to The Invisible Tower, which School Library Journal called "a surefire hit with the legions of Rick Riordan fans."
Spending the summer fighting dragons, rescuing wizards, and leaping through portals into the Otherworld was just the start of Artie Kingfisher's quest to claim his throne as King Arthur reborn. Now, Artie and his sister, Kay, must gather a team of knights to recover the legendary Seven Swords—or face defeat at the hands of the evil Lordess Morgaine.
The Seven Swords is filled with epic battles, unexpected enemies, and life-changing adventures. Rich in mythology and bursting with twenty-first-century fun, this high-spirited spin on Arthurian legend is perfect for middle grade fans of Percy Jackson, the Alex Rider Chronicles, and House of Secrets.

Action & Adventure

The exhilarating final book in the Otherworld Chronicles trilogy, which School Library Journal called "a surefire hit with the legions of Rick Riordan fans."
Artie Kingfisher, his sister, Kay, and the New Knights of the Round Table have finally reached the legendary isle of Avalon. But before Artie can take his place as King Arthur reborn, he must recover nothing less than the mythical Holy Grail. And as the greatest battle of his life looms, Artie finds himself facing off against the one person he never dreamed he'd be fighting.
In The Dragon King, Artie's life-changing quest comes to a spectacular close as the young king discovers what it truly means to be a hero. Rich in mythology and bursting with twenty-first-century fun, this high-spirited spin on Arthurian legend is perfect for middle grade fans of Percy Jackson, the Alex Rider Chronicles, and House of Secrets.

Otherworld Chronicles #3: The Dragon King

Part of the spell has already been broken.The first stones have begun to crumble.In Artie Kingfisher’s world, wizards named Merlin, fire-breathing dragons, and swords called Excalibur exist only in legends and lore—until the day his video game Otherworld springs to life. You are special, Arthur,Says the mysterious message in his game. In one week’s time you will come to me at the it.Cryptic clues lead Artie to a strange place called the Invisible Tower, where he discovers that nothing in his life is as it seems. Artie is none other than King Arthur, brought to life in the twenty-first century. Artie has won the battle in the virtual Otherworld—now the key to saving the real Otherworld lies in his hands as well.Green dragons, hungry wolves, powerful sorcerers—suddenly Artie must battle them all as he wields Excalibur and embarks on a quest worthy of the Knights of the Round Table. With his sister, Kay, by his side, Artie steps into the Otherworld—straight toward his destiny.

Otherworld Chronicles: The Invisible Tower

The New York Times bestseller and international multimedia phenomenon!
In each generation, for thousands of years, twelve Players have been ready. But they never thought Endgame would happen. Until now.
Omaha, Nebraska. Sarah Alopay stands at her graduation ceremony—class valedictorian, star athlete, a full life on the horizon. But when a meteor strikes the school, she survives. Because she is the Cahokian Player. Endgame has begun.
Juliaca, Peru. At the same moment, thousands of miles away, another meteor strikes. But Jago Tlaloc is safe. He has a secret, and his secret makes him brave. Strong. Certain. He is the Olmec Player. He's ready. Ready for Endgame.
Across the globe, twelve meteors slam into Earth. Cities burn. But Sarah and Jago and the ten others Players know the truth. The meteors carry a message. The Players have been summoned to The Calling. And now they must fight one another in order to survive. All but one will fail. But that one will save the world. This is Endgame.

Endgame: The Calling (Endgame, 1)

Teen & Young Adult

Frey, James

Endgame: The Calling (Endgame Series Book 1)

Endgame: Sky Key (Endgame, 2)

The Endgame trilogy continues in the sequel to the New York Times bestseller Endgame: The Calling. Endgame is here. Earth Key has been found. Two keys—and nine Players—remain. The hunt for Sky Key has begun.
Queens, New York. Aisling Kopp believes the unthinkable: that Endgame can be stopped. But before she can act on her own, she is approached by the CIA. And they have their own ideas about how Endgame should be Played.
Kingdom of Aksum, Ethiopia. Hilal ibn Isa al-Salt narrowly survived an attack that leaves him horribly disfigured. But the Aksumites have a secret that is unique to their line. A secret that could help redeem all of humanity.
London, England. Sarah Alopay has found the first key. But getting Earth Key has come at a great cost to Sarah. And the only thing that keeps the demons at bay is Playing. Playing to win.
With only two keys left to claim, the remaining Players will stop at nothing to find Sky Key—wherever it is, whatever it is—as the world begins to crumble.

See the best price to sell, buy, or rent books by Johnson-Shelton, Nils. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Books by Johnson-Shelton, Nils

See the best price to sell, buy, or rent books by Johnson-Shelton, Nils. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Otherworld Chronicles: The Invisible Tower (Otherworld Chronicles, 1)

Otherworld Chronicles: The Invisible Tower (Otherworld Chronicles, 1)

Otherworld Chronicles #2: The Seven Swords

Otherworld Chronicles #2: The Seven Swords

Otherworld Chronicles #3: The Dragon King

Otherworld Chronicles: The Invisible Tower

Endgame: The Calling (Endgame, 1)

Endgame: The Calling (Endgame, 1)

Endgame: The Calling (Endgame Series Book 1)

Endgame: Sky Key (Endgame, 2)