Brave is an action-adventure video game adaptation based on the 2012 film of the same name developed by Behaviour Interactive and published by Disney Interactive Studios. Actress Kelly Macdonald who voiced Merida in the film reprised her role for the video game. The storyline of the video game matches that of the film up until Elinor's transformation into a bear and subsequent escape from the castle which is where the game begins. Merida chases her mother through the forest until she reaches the Ring of Stones. Will-o'-the-wisps appear to guide her to the cottage of the witch from whom she originally received the spell. Confronting the witch Merida demands her mother be changed back. The witch explains that the cursed bear Mor'du has been corrupting a series of waystones with his evil energy leading to the appearance of hostile creatures. The corruption has grown to the point that it even affects the witch's magic making its effects unpredictable thus explaining Elinor's newly-ursine form. Due to her status as the best archer in the kingdom the witch charges Merida with cleansing the waystones of Mor'du's corruption.