The main riddle of the game is the book detailing the history of an ancient kingdom and a magic suit of armor that was dismantled by an evil wizard, who spread the pieces all over the world. Gregory also finds a robot-helper and a strange machine. Inventions of his great ancestor help Gregory to move through time and space and also help in unbinding some of hidden object tasks.
After clearing each location machine generates new key that is able to unlock new places on the map. After new pages of the tale are revealed, you are presented with original mini-games that take some efforts to solve.