Costume Quest

Costume Quest is a party-based role-playing video game developed by Double Fine Productions and published by THQ on October 20, 2010. In the game, the player controls a child who is trick-or-treating with their twin on Halloween night when they encounter a monster that kidnaps their sibling. The player must travel around the local neighborhood collecting items for their costume, candy, and fellow children as companions in order to face the leader of the monsters and rescue their sibling.