Since Pyro just watched Alan Tutorial, it would be amazing to see him go through other fantastic ARGs made by Alan Resnick/Wham City. I recommend deep diving into "This House Has People in It," and "The Children of the Mirror."

Firstly, "This House Has People in It" isn't just the shirt film adult swim posted, there are hours of additional video, notes, and a short sonic parody game which does make sense if you look through the site. Here's a link to the main shirt film to "This House Has People in It": https://youtu.be/x-pj8OtyO2I

And here's the link to the website that you see at the start of the shirt film. It's a real website for the in universe "video surveillance company," AB Solutions. This is where you access all the additional material.:

http://absurveillancesolutions.com/

To access additional material, you have to login at the top of the website, though there's also some fun stuff on the website to look through, too. Here's the info to log in:

Username: 00437

Password: bedsheets

Archives Password: sadday

The second recommendation for an Alan Resnick/Wham City Arg is the "Children of the Mirror." It's super underrated and would be super cool to see Pyro review. Link to the playlist: https://youtube.com/playlist?list=PLROWL11TBjb50d7Xs3Xc2AzPc5Jg28_Nk

As far as I know this ARG doesn't have any outside material and is just these 6 videos, but I could be wrong. I couldn't find anything else though.