In addition to the main YouTube channel, they are associated secondary channels. OldManFailsAtGames is a sometimes in character video game streaming channel where the character Athan Fadler will stream gameplay with hidden puzzles and other interuptions helping to tell the story. Not all streams are related to the ARG but a good number of them are. https://www.youtube.com/@oldmanfailsatgames
There is a TikTok account associated with this series. Some of the videos are the same as those found on the main YouTube channel but a few are unique. https://www.tiktok.com/@ummuhubur
There is a VERY extensive google doc for this series creater by nightmareluna. It can be found here: https://docs.google.com/document/d/1pz-Lw1XkYYlG-dgqRpar4hUF7N0EgxFFkGRPyVMlgQI/edit#heading=h.hw9rqn6d6jz9