Ethereal Entertainment has released a teaser trailer for its upcoming Source game, Slender: Source. Slender: Source is based off of the legend of the Slenderman which is a mythical creature often depicted as a tall, thin figure wearing a black suit and a blank face. Players must work together to collect a certain amount of creepy dolls all while trying to avoid the abomination that is the Slenderman. Slender: Source is planned for a Q1 2013 release. Enjoy!