On October 22nd 2016, Hussie posted a news update stating "Just going to leave this here for now, and assume that the kids these days will know what to do with it." He linked to a snapchat code that led to MS Paint Adventures' official Snapchat, mspaofficial.
Beginning with snaps being posted the day before the credits, and as of now continuing indefinitely, the snaps serve as an extracanonical extension of Homestuck.
A sequential mirror of the snaps is available here.
These snaps follow after the events of Act 7, and comprise the first 11 snaps in the credits sequence, where the players set up the starting conditions for Earth C's new society. Snaps which only appeared in the credits video itself can be found here.
12:59 John takes a selfie with a "greetings from EARTH C" filter. Roxy, Dirk are in the background, as well as Dave and Rose carrying Karkat and Kanaya, respectively.
14:00 Jake and Jade wave at several Carapacians from above as they begin to dig foundations.
14:52 Several carapacians build a house, possibly the town hall.
16:02 Dave takes a selfie with his arm around WV, with Jade hugging PM behind them.
17:00 John takes a selfie - behind him we see Roxy, Kanaya, and Rose walking towards the Trolls' meteor and a shitty Statue of Liberty.
These snaps display the players and various civilians engaging in Earth C Halloween traditions.
12:00 A picture of hives, presumably in the Troll Kingdom, strung with lights and decorated with Jack-o'-lanterns.
12:59 John takes a selfie, showing Jake's Na'vi (potentially Jake Sully) cosplay, the subject of everyone else's discomfort, as he opted to be mostly nude for the costume. John is dressed up as the candy corn vampire version of Problem Sleuth, Kanaya is dressed up as Rose's Mom, and Rose is dressed up as the Dolorosa. There is a Halloween sign in the background.
13:59 Three Trick-or-Treaters are standing at the door in the Troll Kingdom. Respectively, a troll cosplaying Lrd English with a skull candy bag, a human cosplaying the Condesce with a clam purse candy bag, and a carapacian cosplaying Bec Noir with a devilbeast pumpkin candy bag.
14:59 Dave takes a selfie of himself dressed as Hella Jeff, Dirk dressed as Sweet Bro, and Karkat problematically portraying Geromy. They are all on a staircase, and a banner in the background appears to be "WARNE"ing them.
17:00 Calliope takes a selfie of her, Roxy, Jane, and Jade dressed up as Ghostbusters and chasing after the two Nannasprites in the Consort Kingdom.
17:59 Gamzee sends a selfie to Jake of himself dressed as Caliborn, and Caliborn in the background dressed as Jake.
18:59 We see the three finalists in a costume contest: In 3rd, a carapacian dressed up as John; In 2nd, a troll dressed up as Jade; In 1st, a Crocodile dressed up as dead doomed Felt suit Dave.
19:59 Two carapacians sneak bites from a pile of pumpkins, which feature the symbols of Jade, Rose, Kanaya, Karkat, John, and a SBaHJ face with a set of stairs. John's pumpkin already has a bite out of it.
20:59 A selfie sent from Terezi, while she asks "WH4TS H4LLOW33N". She's still out searching for Vriska near the black hole, and there appears to be a dead Aradia in the background.
~22:00 John, Jade, Rose, and Dave pose as a team in their respective costumes.
This sequence shows what Jack Noir, Ms. Paint, and the Felt have been up to since the players left the session in Act 7. The captions, interestingly enough, seem to be Jack's comments, and not the senders' own words.
14:00 Jack Noir sends a snap back to Clover, disugstedly telling him to get back to work. Ms. Paint blushes in the background, presumably looking at the same snap.
15:01 Jack tells everyone in the Felt to report in. Ms. Paint poses for a selfie in the background.
16:00 Die reports in. He's helping Trace, Itchy, and Eggs chop down LOFAF trees for construction on the new Felt Manor.
17:00 Doze reports in, but his powers significantly slowed down the image's ability to buffer. Behind him is Cans, with Clover (still unbuttoned) atop Cans' shoulder.
18:00 Stitch reports in - behind him are Sawbuck, Matchsticks, and Quarters apparently placing some sort of bet on a few frogs wearing miniature versions of their outfits.
19:10 Crowbar reports in from the victory platform - Biscuits is nearby, affixing a few rocket packs to his oven. Fin is next to him, staring at the white universe entry door and the several future trails leading into it.
Set in the only free day between six of the eight kids' birthdays, this brief story shows the carapacians' plans to apparently celebrate those kids' birthdays by physically turning the moon into a crescent shape.
19:37 For the first confidential meeting weeks ago, carapacians of bothcreeds gathered to plan their kingdom's part in the birthday celebration, or "CREATOR SIMULTANEITIVITY JUBILEE".
19:38 This image shows many carapacian scientists hard at work on the surprise gift, which appears to be a giant laser.
19:39 Blueprints show that the surprise appears to involve surrounding the moon with a "debris containment field", and then firing the laser at it, to "engage lunarscaping".
19:40 In a move being described as "SOMNAFORMATION", the moon has a large chunk taken out of it, resulting in a crescent shape, ostensibly in an effort to please the creators.
This story ties together the three previous, seemingly unrelated arcs into a single culminating event. Confirmed later to be the last batch of the credits snaps.
13:01 Jane is intrigued to find herself on the moon, and in the distance outside the window of her location, one can see Jack riding atop the jetpack-affixed oven.
13:01 Jack, looking down at Earth C and its moon, decides this is a good place to "start carving out a nice fat piece of the action". He also tells the Felt to stop dancing inside the oven. Jane's location can be seen - it's a large red building surrounded by two large red rings painted on the moon, like a target.
13:59 Roxy is flying towards the moon, well above the Earth now, holding Calliope's hand. She tells Jane that she can't explain everything right now.
14:00 Jane brushes it off, noting that she can figure it out herself now - the plaque on the wall pretty clearly implies the "SOMNAFORMATION" plan.
15:00 Something on Jack's jetpack oven transport device explodes.
15:01 The craft is smoking, Jack starts to fall towards the target on the moon. He blames it on the Felt's dancing.
16:04 Jane takes a selfie, pointing at Jack in the background, assuring Roxy she can handle this herself, in light of all the other attempts on her life she's endured.
16:04 Carapacians rejoice in the control room as the debris containment field is engaged.
17:01 Calliope looks very concerned. She asks if Jane is alright, pointing out the "impenetrable shroUd" around the moon and Jane's implications of "foUl play".
17:01 Jane seems unconcerned as she takes a selfie with the Felt, who have apparently offered to assist her.
17:59 Jack is kneeling on the ground, bleeding from his arm stump, the bandage now being used as a leash. The Condesce's tiara is tied to his collar with the leash. He shows signs of being under mind control and is bleeding.
17:59 Clover looks very nervous. Jane says she's putting him in charge of her social media for now, and laments their lack of attention as gods of this universe.
19:00 Still holding the leash in one hand, Jane orders the rest of the Felt back into the oven - Doze and Cans appear to be entering last.
19:00 Cans looks hesitant as Jane stops him from entering the oven.
19:57 Cans returns to his usual grumpy glare as he stares from outside of the closing oven door. Jane remarks "See you in a week! HOO HOO HOO!" Jane is presumably punched into next week with the Felt members excluding Cans, who will be killed.
19:58 A Prospitian presses the "LUNARSCAPING RAY" button.
19:58 Calliope and Roxy narrowly dodge the blast. A huge chunk is gone from the moon, and it is now permanently crescent shaped. A carapacian in the caption wishes "A CONVIVIAL CREATOR SIMULTINAETIVITY JUBILEE TO THEM, AND TO ALL!"