|FROM A VIDEOGAME|
This article discusses content originating from the video game Slender: The Arrival and thus is confirmed to be fictional.
Characters and organizations discussed are either entirely fictitious or are portrayed by voice actors/actors.
Oakside Park is a location from Chapter 2 of the game Slender: The Arrival.
Incorporation into Plot Edit
The park is first entered by the player in what is, without a doubt, an improved remake of the scenario from the original game in which 8 pages are randomly scattered around in 10 sites, and you must collect them all to proceed to the next chapter. It can be assumed that the staff that run the park are aware of Slender Man because the phamplet for the park on the building you start next to states that formal attire, including dark suits like Slender Man's, are discouraged.
It's likely that another area of the park was the setting for Slender: The Eight Pages, as the radio tower can be seen in the background of the "Genesis" mission.