Q: Context: Slender: The Eight Pages is a freeware indie-developed first-person survival horror video game released in June 2012 as a beta for Microsoft Windows and OS X, utilizing the Unity engine. Developed by Mark J. Hadley, the game is based on the quasi-folklore meme figure known as the Slender Man, who is depicted as a tall man wearing all black with a white face with no facial features. The character is known for the ominous abduction of countless children in dark mysterious settings, such as deep forests and abandoned buildings.

Question: when did the slender man game come out? Let's give stream of consciousness first:
The relevant information to answer the above question is: Slender: The Eight Pages is a freeware indie-developed first-person survival horror video game released in June 2012 as a beta for Microsoft Windows and OS X, utilizing the Unity engine. Therefore, the final answer is June 2012.