Published on SEGA's website in November of 2008, Sonic: Night of the Werehog is an ONA made to promote the release of Sonic World Adventure, also known as Sonic Unleashed in North America and Europe. Sonic and Chip venture to an abandoned haunted house on a rainy night, soon to be caught up in the antics of two mischievous ghosts, who scare any of the house's visitors in order to take their picture and imp...