Collects four adventures in which the reader's decisions determine the outcome of the stories.

Contains 6 bestselling gamebooks for readers ages 9-12 in a bright gift box: Race Forever, Escape, Lost on the Amazon, Prisoner of the Ant People, Trouble on Planet Earth, War with the Evil Power Master.

You are a detective and psychic investigator. One day in your office/lab you receive a phone call: "Help! I need your help!" You quickly trace the call to a big, strange-looking house. The front door is opened by a mysterious woman who vanishes before your eyes! You soon discover that each room in the house contains a deadly mystery. There is danger at every turn. Can you think fast enough to survive? 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!

The great Mayan civilization disappeared more than 800 years ago. Could we be next? Your friend Tom disappears on assignment in Mexico searching for clues to the sudden collapse of the Mayan civilization. Then a pool of human blood appears at the Mayan ruin where Tom was last seen alive. Has he travelled back in time? This book is different to other books. You and YOU alone are in charge of what happens. You must use all of your numerous talents and enormous intelligence. The wrong decision could end in disastereven death. But don't despair. At any time, YOU can go back and make another choice, alter the path of your story, and change its result.