You go on a school trip to the zoo and nothing happens to you. In this adventure, you can learn about animals you have never met and meet prehistoric monsters. Only you can know how the adventure will develop and how it will end. There are exactly 25 different endings that the roads you will follow can lead you to. Some are good, some are bad… Everything depends on your decision. You have to be very careful. You can feed the saber-toothed tiger, you can save the life of the mermaids. Or you can save the life of the Tasmanian devil and have the golden key to the zoo.