Mice and Mystics In Mice and Mystics, players take on the roles of those still loyal to the king – but to escape the clutches of Vanestra, they have been turned into mice! Play as cunning field mice who must race through a castle now twenty times larger than before. The castle would be a dangerous place with Vanestra’s minions in control, but now countless other terrors also await heroes who are but the size of figs.