Game: Stream Train
Developer: Half Past Yellow (Copenhagen)
Publisher: Self-published
Genre: Co-Op Horror Adventure
Release Date: October 15, 2026
Platform: PC (Steam)
Players: Solo or up to 6 online co-op
Language: English only
Price: TBA
🚂 Stream Train launches on Steam on October 15, and the playtest is taking sign-ups right now. Half Past Yellow’s co-op horror game puts up to six players on a steam train through cryptid country, livestreaming the whole thing in pursuit of virality. Hit “Request Access” on the Steam page to get in the test.
⚖️ Chat Is the Resource, and Chat Gets Bored
The hook here isn’t the train or the cryptids. It’s that your audience is a survival mechanic.
Chatters react in real time to whatever they see, pose challenges, and make requests. Keep the content flowing and they keep the donations and support flowing — and you need those to make it through the Uncanny Valley alive.
The detail that makes it work is on the store page rather than in the announcement: they’ll also tell you when they’re bored.
So the pressure isn’t just staying alive. It’s staying watchable while you do it — which means the safe play and the winning play are pulling in opposite directions from the moment you leave the station.
Try not to make them angry. Or at least film it.
An abandoned railroad, a forest full of things that shouldn’t be photographed, and six people whose main concern is whether the footage is any good.
Stream Train is a co-op horror adventure from Copenhagen’s Half Past Yellow, and it now has a date: October 15, 2026 on Steam. Up to six players squad up, customise avatars, and take an old steam train through the cryptid-infested wilderness of the Uncanny Valley, livestreaming the trip in pursuit of internet fame.
You investigate derelict buildings, document strange creatures, prank each other, and try to keep an audience entertained. The playtest is accepting sign-ups now on the Steam page, which is the more immediately actionable half of this announcement.
The Loop
🎥 Capture Content
Document creatures, explore derelict buildings, keep the camera rolling when things go wrong.
😈 Pull Off Pranks
Your friends are content. Chat rewards entertainment, and betrayal is entertaining.
💸 Bank Donations
Support from chat is a survival resource, not a score. You need it to finish the run.
🚂 Keep Rolling
The train is yours to drive. Explore the valley at whatever pace you can survive.
📺 Livestreaming as a Mechanic, Not a Theme
Game Director Max Wrighton says building a game around livestreaming is something he’s wanted to do for a long time, and pairing it with social co-op made obvious sense to him.
What separates this from a game that’s merely about streaming is that chat is an active system with demands. It sets challenges. It makes requests. It withholds support when you’re dull. That’s a pressure source most co-op horror games don’t have — the monster wants to kill you, but the audience wants a show, and only one of those can be satisfied by hiding in a cupboard.
The Obvious Comparison
🎬 Yes, It’s In Content Warning’s Neighbourhood
We may as well say it, because everyone reading a headline about a co-op horror game where you film monsters for views is already thinking it. Content Warning did the film-the-monster-for-clout premise, and it did numbers.
The distinctions worth noting: Stream Train is built around a persistent train journey through a procedurally generated valley rather than descents into a hole, chat here is a continuous reactive presence rather than a post-run view count, and the tone leans further into dark comedy and exploration than pure scare delivery.
Whether that’s enough daylight is a fair question, and one a playtest will answer better than a press release. But “similar premise, different structure” is a normal way for a genre to develop, and this one is developing quickly.
🧰 What the Steam Page Adds
A few things worth knowing that the announcement doesn’t cover:
• You can play it solo. Steam lists single-player alongside online co-op. The release only mentions six-player squads, so this is a genuine addition
• Procedural generation is a listed tag, which explains how a fixed rail route stays replayable
• Chat tells you when it’s bored — the negative-feedback half of the audience system
• English only for interface, with no other languages currently listed
• No price announced yet, six weeks out from launch
• The store page carries four award badges, though the specific awards aren’t named in text
• Tagged Dark Comedy and Job Simulator as well as Horror — this is not aiming to be relentlessly frightening
A Studio Saying the Quiet Part Out Loud
One thing we enjoyed in this announcement: Wrighton describes the category as “the social co-op/friendslop genre” — in a press release, on the record, without flinching.
“Friendslop” is the half-affectionate community term for the wave of cheap, chaotic, physics-driven co-op games that let four to six friends fail loudly together. It’s a label most marketing departments would run a mile from. Using it in your own announcement is a small signal that the team knows exactly what they’re making and who it’s for, which is generally a better sign than a studio insisting its co-op horror game is a profound meditation on something.
Release, Specs and Availability
🖥️ PC via Steam, October 15
Stream Train is PC-only with no console versions announced. Steam confirms the October 15, 2026 date, and the playtest is live for sign-ups now — request access and you’ll be notified when the team opens it up.
A 2 GB install and a GTX 1060 floor means most of your friends can actually run it, which matters more than usual for a six-player game. Note that Steam’s listing writes the recommended card as a “GTX 2060” — that’s an RTX card.
🤖 A Small AI Disclosure, Filed on Steam
Not in the press release, but disclosed on the store page, so we’re reporting it.
Half Past Yellow state that they used AI to generate additional chat message ideas from an initial list the team wrote themselves. Relevant suggestions were added to the game, some were altered to fit, and the rest were discarded.
Worth being precise about the scale here — this is idea generation for one text system, human-written first, human-filtered after, in a game whose chat needs a very large volume of short messages. It’s a narrower use than most disclosures we’ve seen, and the developers filled the form in rather than leaving it blank. Readers who treat any generative AI as a dealbreaker should still know it’s there.
👻 Co-Op Horror
📺 Livestream Sim
🚂 Trains
🎭 Dark Comedy
🔍 Investigation
🎲 Procedural
Who’s Making It
🇩🇰 Half Past Yellow — Copenhagen, Denmark
Founded in 2017, with three commercial titles in nine years — all of which picked up award nominations. That’s a deliberate, unhurried release cadence, and an unusually good hit rate to go with it.
🐸 From Frog Island to Cryptid Country
Their most successful game is Time on Frog Island (2022), which won Best Debut and Best Kids Game at Spilprisen 2023 before taking Best Fun for Everyone at the Nordic Game Awards the same year. Going from an award-winning children’s game to a horror title about filming cryptids for clout is a genuinely funny pivot — though “fun for everyone” and “six friends screaming on a train” aren’t as far apart as they sound.
🗣️ Max Wrighton — Game Director
“I have always wanted to build a game with livestreaming as a mechanic, pairing it with the social co-op/friendslop genre made complete sense. I can’t wait to see what players think of Stream Train.”
Stream Train arrives on Steam on October 15, 2026. Wishlisting and playtest sign-ups are both open now.
Hi there! I’m Marie, also known as CtrlQueen. I’m passionate about keeping up with the latest in gaming news and sharing my insights. RPGs steal my heart with their rich narratives and immersive worlds, but I also love unwinding with fun, casual games. Whether you’re here for deep dives into game mechanics or just to chat about your favorite casual game, you’ve found the right place! Let’s game and explore together.
