There are 3 books in the Rasmussem Corporation series. The newest book is Deadly Pink which came out in 2012.

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User Unfriendly

User Unfriendly
It's the most advanced computer role-playing game ever: When you play you're really there - in a dark dream teeming with evil creatures, danger-filled fortresses, and malevolent sorceries. The game plugs directly into your brain - no keyboard, no modem, no monitor. And for game hacker Arvin Rizalli and his…
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In Heir Apparent there are as many ways to win as there are to get killed. "A stylish tale [that] addresses both fantasy gaming and censorship." (New York Times Book Review)

From Edgar Award–winning author Vivian Vande Velde comes a rollicking story that puts a high-tech twist on the classic…

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Deadly Pink

Book cover of Deadly Pink
Grace Pizzelli is the average one, nothing like her brilliant older sister, Emily, who works for Rasmussem, creators of the world's best virtual reality games. The games aren't real, though - or at least they weren't. Now Emily has hidden herself inside a pink and sparkly game meant for little…