R. A Montgomery

Readers make choices that determine the outcome of the story when, while exploring the seas for the lost continent of Atlantis, they are separated from their diving vessel.

Depending on the choices you make, your adventure in the House of Danger could throw you back in time, or into another universe, or inside a super-energizing chamber where you get fantastic psychic powers, or you could become Grade-A human meat for invading aliens!

You and your Martian temmate, Flppto, are top commanders in the Lacoonian System Rapid Force. On the way to the dangerous planet Follop, you receive a call for help from a planet off your flight plan.

Asks the reader to choose the plot path in a story in which most of a medical team researching tropical diseases goes missing in the Amazon jungle, leaving a young doctor--the reader--alone.

Asks the reader to choose the path of the plot in a story in which members of the Zondo Quest Group II research team go missing, possibly taken prisoner by the deadly Ant People, who are the Evil Power Master's new allies in his quest to control the universe.

The year is 2045. Civil wars and foreign attacks have split the U.S. into three hostile political areas. Can you make it home from your secret mission in time to help? A once-proud country governed by freedom is torn apart. One section, Dorado, dominates the others with harsh police-state tactics. You are from Turtalia, a new democracy, and you are returning there with important information about Doradan s plans to invade. Two others, Matt and Mimla,...

On your first solo journey to find the Lost Continent of Atlantis, you failed to bring back proof of your success. Many people think that you imagined the whole thing-or worse. Now you and your colleague Horton James III are returning to document this amazing otherworld. But back below the surface of the sea dangers abound. A treacherous king lures you to riches; rebel slaves lure you to help lead a revolt; and the evil Nodoors aim to capture you...

The reader's decisions control the course of an adventure in which a gambling syndicate tries to influence the outcome of a Swiss auto race.

The reader, in the role of the Chief of Operations, controls the course of an adventure set in 2051 in which the country of Turtalia, located in what was once the northwestern United States, goes to war against the evil nation of Dorado.

A machine that could stop radiation would shift the balance of world power overnight. In the right hands, it could herald a new age of world peace. In the wrong hands, it would spell disaster. The brilliant Dr. Wogan has designed such a machine. But she has gone missing, along with the plans. As her right-hand assistant, everyone looks to you to help find her.