These kids aren't ordinary trick or treaters though as they can 'become' their costumes and do battle against monsters terrorising the suburbs.
It's a download only title for Xbox Live Arcade and the PlayStation Network releasing October 31st. Some of the fights take place inside the minds of the kids, which is where they can literally become the costumes they wear.
Costume Quest's development is led by lead animator Tasha Harris, with Schafer overseeing all 4 of the games in the works at Double Fine. Not quite what the world was perhaps expecting from the Brutal Legend studio.