No one can tell you about this game better than the publisher. Quoting crowdgames:
"About mice and secrets" is a family cooperative adventure game. A key feature is the fairy-tale plot that they create and develop themselves.
Participants choose one of the chapters that are part of the book of fairy tales game, collect the playing field from several fragments, choose characters and try to fulfill the winning conditions of the Chapter. Each Chapter is unique (it has its own rules), so even if the same fragments are used to create the field as for the other Chapter, their interactive objects will interact with the characters differently.
According to game developer Jerry Hawthorne, "About mice and secrets" is not a fairy tale game, but a fairy tale that can be played on the table. Initially, Jerry created the game for his little daughter, who was just learning to read. At that time, her favorite animals were mice, and Jerry was trying to make a game about mice so exciting that her daughter would want to go through it further and read more and more game art inserts. But Jerry went a little too far. Because the game fascinated not only my daughter, but the whole world.