virtual reality

An introduction to virtual reality explains what it is and how it works, along with examples of how it is used in the real world, in a book that includes a make-it-yourself VR viewer.

Marisa Carneseca is hunting a mysterious hacker named Grendel when she learns that her team has been invited to an exclusive tournament for the wildly popular VR game Overworld. But Marisa soon realizes that the competition is rife with corruption and the stakes are life or death.

College freshman Mariam uses a new virtual reality dating service and is matched not only with her new best friend, Jeremy, but also with her high school ex-boyfriend, Caleb.

"Yuuki's sudden disappearance has left Asuna bereft. It had seemed like everyone was having such a good time-what did she do wrong...? She turns to Kirito in her search for answers, but she may end up wishing she'd never pulled on that thread"--Back cover.

Kazuto Kirigaya, aka Kirito, dives back into the virtual reality game "ALfheim Online" to save Asuna, who has not regained consciousness, and he meets a girl named Leafa, who decides to help him in his quest. Unknown to both of them, however, is the fact that Leafa is Kirito's real life sister and, even in the game, she instinctively needs to help and protect him.

Luna appears and challenges Shark to a duel for a new card and a new power. Meanwhile, Yuma and his friends create the Numbers Club to find the Numbers Cards and stop Dr. Faker.

When Yuma realizes the only way to return his brother to normal is to collect one hundreds Numbers Cards, he begins a search that brings him face to face with the dangerous Kaito, a "Numbers Hunter.".

When E'Rah, the deity of despair, declares that she's come to destroy the Astral World, Astral realizes that E'Rah was the one who scattered his memories and chose Yagumo to be her agent. Soon, Yuma, Kaito, Shark, and Astral are caught in an epic duel that will decide their fates.

The duel of Yagumo and Ryoga accidentally opens a door to another world, pulling Yuma and friends inside. There they find that Yagumo has planned to use a black hole to destroy both Earth and the Astral World--and even the combined strength of Yagumo, Ryoga, Kaito, and Yuma might not be able to stop it.

As Kaito and Shark engage in an epic duel with Shadow, they learn some surprising things from the Numbers War--that Astral originally came to destroy the world, and that Dr. Faker is truly dead. In order to figure out the truth they will have to take the fight right to Mr. Heartland.