Sonic the Hedgehog Adventure Gamebooks:
Robotnik creates an evil duplicate of Sonic named Zonik.
What's wrong with Sonic?
The Green Hill Zone is under attack from a new enemy. Reports come in of a fast-moving blue creature bashing everything in sight. Surely this can't be Sonic? Or has Robotnik cooked up another monstrous plan to crack the blue wonder?
It's up to you to find out. Use your speed, skill and agility in this part-story, part-game adventure. But think fast and move quickly–only the best can keep up with Sonic.
- Although the cover of this book clearly shows its title is Sonic v. Zonik, in the book's interior the title is written as Sonic Vs Zonik.
- The events of this book mostly take place in the Zones of Sonic the Hedgehog 2, except that the Emerald Hill Zone has been replaced with the Green Hill Zone, which appeared in Sonic the Hedgehog 1991. Despite this, Sonic encounters a Buzzer Badnik (which are actually native to the Emerald Hill Zone), and there is a gate from Green Hill to the Chemical Plant Zone, guarded by Spike Buggy  (aka Drill Eggman, the boss vehicle from Emerald Hill).