Author Information
Nancy Osa's Latest Book

Newest Release

  • Bibliography:
    6 Books (1 Series)
  • First Book:
    March 2005
  • Latest Book:
    March 2023
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Full Series List in Order

Defenders of the Overworld

1 - Battle of Zombie Hill (Jul-2015)
2 - Battalion Banished (Aug-2015)
3 - Spawn Point Zero (Oct-2015)
4 - Deep Ocean Six (Jan-2016)

Book List in Order: 6 titles



  • For fans of Matt de la Peña and Sandra Cisneros comes a novel about family and identity, where Violet Paz prepares for her quinceañero and learns about her Cuban heritage.   Violet Paz has just turned fifteen, a pivotal birthday in the ey...



  • Rob is on his way home from vacation when his plane goes down over the ocean biome. He eventually reaches shore, but where is he? And what new dangers lie ahead? His attempts at survival barely keep him alive until he allies with Frida, the sole inha...



  • Rob and Frida’s Battalion Zero has vanquished Dr. Dirt, but Dirt’s accomplice, Lady Craven, has risen to power to finish what Dirt started: control of every biome boundary to rule the Overworld. The balance of day and night has shifted, and the m...



  • After repeated boundary attacks by Dr. Dirt and Lady Craven, the United Biomes of the Overworld alliance hangs by a thread and must be rebuilt. Captain Rob, Corporal Frida, and the members of Battalion Zero have made it their lives’ work to do it -...



  • This adventure series is created especially for readers who love the fight of good vs. evil, magical academies like Hogwarts in the Harry Potter saga, and games like Minecraft, Terraria, and Pokemon GO. Someone is draining the Overworld oceans of ...



  • Is it possible that the future of the human race might boil down to one really good idea?Deception, subterfuge, and misinterpretation take center stage in this tale of fact meets fiction. Carlita Hall and her four friends have joined the cast and cre...




Frequently Asked Questions (FAQ)

Nancy Osa has published 6 books.

Nancy Osa does not have a new book coming out soon. The latest book, The Place, was published in March 2023.

The first book by Nancy Osa, Cuba 15, was published in March 2005.

Yes. Nancy Osa has 1 series.