Publisher website: "Morris Mouse sneaks on tiptoes into the cheese castle to steal some royal cheese. But watch out: The royal alarm bells must not ring! You carefully try to slide your wooden sticks through the holes of the cheese castle without touching it. The other players meanwhile have to be quiet as mice! If a player moves too daringly the alarm bells will ring immediately and their turn is over. A silent game of skill for 3-4 players as quiet as mice ages 5-99." Each player is a mouse running through cheese castle, which is full of holes. You roll two dice and place one of your wooden sticks through holes of that color. Be careful not to ring one of the bells on the castle walls.