Board Thread:General Wiki Discussion/@comment-36572169-20180813133907/@comment-26444017-20180813193546

ARG's are more far-reaching, not to mention much more interactive. There is also a certain progression and end goal associated with an ARG.

By contrast, a creepypasta can exist on its own, without involvement from other users. An author can post a creepypasta in its entirety, formatted and grammar-checked, and other people are left to be merely observers. Though able to comment, the other people on the site would have no need to interact with the work itself directly.

So, as a short summary, I think there's a difference of expectations between a creepypasta and an ARG, as well as a different level of interactivity.