A couple days ago, an anomalous source tipped me off that there were a couple hidden links I'd missed in a couple Flipside videos, so I set out to find them. As far as I can tell I am now caught up with all the Flipside Zer0 hidden content, so let's go over it, shall we?
This will be a rather long post. On desktop, you can press J to skip a post if it is clogging your dash. It also won't be an in-depth analysis of what all this means, just my best understanding of what all this says.
Flipside Experiment || Internal Test File || [L]R
In server's most recent video at 5:15, there is a link to a google doc. I put the distinguishing parts of this link into a comment on the video, because it is… grainy. I have confirmation that any future links will not be this hard to interpret! Shoutout to Viv, Steel, and Imke, who all tried at least a couple combinations, and Solar and Grove, who were the ones to finally crack it (I went to sleep because it was 5 AM). It can be found here.
Fittingly, this is probably the most in-universe classified of the documents, considering the Access Notice at the end which states "If you are reading this file without authorization, you were not supposed to find it." I'm good with treating this as a moment of sweet ludonarrative assonance where whatever encryption those scientists tried to put up was no match for the power of six* nerds over four hours. It is a summary of the FlipSide Experiment, detailing the concept of the SMP in technical terms, what the scientists are attempting to research from it, and the various stages/iterations it has gone through.
It sounds like the first attempt at Flipside SMP was messy and ended early, so in between that and the version of Flipside classic we've seen, they implemented an "artificial intelligence oversight system" that is definitely server_anomaly, testing it with a test round paired up with an unidentified participant-- or rather, a participant identified as "UNIDENTIFIED_[four redaction characters]". We can be reasonably certain that this is someone in Flipside Zer0, because that's one of the names listed in the "residual data from previous experiment" bit of server's opening console crawl.
After that comes the mesa/jungle Flipside that we all know and love, and then an unauthorized post conclusion addendum: the scientists considered their core objectives met, but server_anomaly disagrees. It left a note in the document, stating that there's more that it wants to learn; that, evidently, is where Flipside Zer0 comes in.
The title of the document seems to imply that this is test file Left and there might be a test file Right at some point in the future. That, or I'm misinterpreting "[L]R".
sys_recover_414.txt
In Schemer's latest video at 13:35, there is a faint link visible. My friend Grove was actually the one to find this one, while I was still asleep because I'd spent the whole evening trying to crack the first one (and it found it the hard way because it went through the entire video very slowly first). It can be found at https://tinyurl.com/sysrecover414, or here.
This one is a github file, and the only file currently on the github account: serveranomaly. It was made on December 10, 2025, though that's not necessarily its canonical creation date, heck if I know. It details the process of sending Schemer into the world late, both in the technical code sense and with an internal note from server.
The interesting details are that Zek is mentioned (server addresses them directly when asking them to give Schemer the player.data (inventory and stuff?) that Khaos previously had); that there's something about lab_subnode being the fallback node that Schemer's spawn anchor is redirected to (which possibly pertains to the grainy image of a computer room seen near the start of Schemer's video, but we will need to further consider the implications); and "residual data detected from COLLIDER_EVENT_FUTURE" being potentially the source of the problem that made Schemer arrive late (WHAT IS COLLIDER_EVENT_FUTURE? THAT'S SCARY).
Observational System AXIOM-7 Design, Deployment, and Behavioral Notes
In Poke's latest video at 8:56, there is a link visible in the bottom left corner. This one I actually found on my first casual watchthrough of the video; everyone say thank you Poke SighingBalloon. (For the record: y'all are good to hide links slightly more than this if you so desire, this is not the maximum hiddenness threshold. But it was a very welcome change from the previous night.) It can be found at tinyurl.com/5n6ss7km or here.
This document details the design choices, such as programming, restrictions, testing, and physical host computer, of an artificial intelligence called AXIOM-7, designed to be an "observational control subject" for the original Flipside that would not have the unpredictability of using a human for this purpose. AXIOM-7 is very clearly server_anomaly.
One of the sections of this document is about what safeguards and limitations it has, which, lol. lmao. It has, to my knowledge, done literally every single one of the things it is not authorized to do.
This section also mentions that it was first tested by being paired up with "Test Subject 001", which is Poke SighingBalloon. Unclear whether this means that Poke is the aforementioned Unidentified_redacted; this seems possible and even likely, but raises the question of why different subject identifiers were used (potentially indicating that this document is a particularly declassified version?).
The computational platform, or physical hardware, that AXIOM-7 and literally nothing else is hosted on is Zektron Core Unit - ZEK-9, which explains who and what Zekcya is. This is a huge win for me since I was already an enthusiast of Zek being the literal hardware of this whole situation, and a huge loss for the scientists since both their software and their hardware separately became sentient without their knowledge.
HOUSE.
At the bottom of the alt text of the most recent official art post, there is a link to an unlisted video on server_anomaly's channel. It can be found here.
It is a short video, where server questions Lyn about why they are building a house when it is certain to be temporary. Lyn is unbothered by his house's eventual doom since they want to have fun and be comfortable while he's here, and server asks several questions before just stealing stuff from them. (It reads to me like Lyn thinks this temporariness is because red names will likely destroy the house while server is referring to how the whole experiment is temporary, but I could be wrong about that.)
The whole scene feels quiet and weird and ambient in a way I really like.
The World Remembers You
For completion's sake, I'm also including the unlisted video that's been a known factor for a while. In Rift's episode 1 at 10:58, there is a link to an unlisted video on server_anomaly's channel hidden in the top right corner. Again, Solar found this one. It can be found here.
This video features Rift and server in the location I've been calling the servoid. Is this Limbo? I have prior associations with the Limbo datapack that mean yay two nickels but also I'll kick my own ass if it's Limbo.
Since my last post on the servoid, we've also seen Schemer in there before his arrival on the SMP, but trying to figure out the nature of the servoid is less relevant to the themes of this post.
However, now we do have the answer to the question Rift poses in that video: "What do you want?!"
I wonder whether this answer will be any comfort to him.
