is a memory-building game for children ages 5 to 9. Rex the Tyrannosaurus has stolen all the books in the city and scattered them and their bookworms all over the place. Now, you must help Derik the Dinosaur get them all back. As you travel through the maze-like city collecting books, you earn points by playing memory-matching games against Rex. Features 3 levels of difficulty, 2 levels of play, WAV sound effects, music and animation.