There are 6 books in the Daniel X series. The newest book is Lights Out which came out in 2015.

1
The Dangerous Days of Daniel X

By James Patterson , Michael Ledwidge ,

Book cover of The Dangerous Days of Daniel X
Fifteen-year-old alien hunter Daniel X is on a mission to finish the job that killed his parents - to wipe out the world's most bloodthirsty aliens on The List. At the number-one spot, The Prayer is Daniel's ultimate target. With mind-blowing skills like telepathy and the ability to transform and…
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2
Watch the Skies

By James Patterson , Ned Rust,

Book cover of Watch the Skies

Daniel X takes on the wildest threat the world has ever seen -- someone whose craving for fame could destroy the planet!

Lights

All's quiet in the small town of Holliswood -- television sets, computers, and portable devices aglow in every home, classroom, and store. But not all is perfect.…

3
Demons and Druids

By James Patterson , Adam Sadler,

Book cover of Demons and Druids

The Alien Hunter is playing with fire...

Daniel X is on an impossible mission: to eliminate every intergalactic criminal on the face of the Earth. Using his incredible superpower to create objects out of thin air, he's taken on some of the most fearsome and fiendish aliens in the universe.…

4
Game Over

By James Patterson , Ned Rust,

Book cover of Game Over

THE BEST VIDEO GAME YOU EVER PLAYED . . .

Daniel X is one of the greatest superheroes ever to walk planet Earth. He has defeated a host of evil-doers on The List of Alien Outlaws, and now he's ready to raise the stakes on his next impossible mission -…

5
Armageddon

By James Patterson , Chris Grabenstein ,

Book cover of Armageddon

Daniel X has never lost a battle against the disgusting, dangerous extraterrestrials on his List of Alien Outlaws. But he must now face a foe whose origins appear nearer to the depths of Hell than to the outer reaches of the galaxy! Number 2 is an unstoppable criminal who's slowly…

6
Lights Out

By James Patterson , Chris Grabenstein ,

Book cover of Lights Out
James Patterson's high-octane sci-fi adventure series comes to a white-knuckle conclusion in the final battle that Daniel X has been waiting for.

Daniel X has been hunting aliens most of his life. Aided by his power to create anything he can think of, he's fought his way up the list…