Stream Train is a cooperative multiplayer horror game from Half Past Yellow, and it is built around one idea. You and your friends are live streamers chasing viral fame, riding a steam locomotive through a haunted place called Uncanny Valley, and the scarier your footage gets, the more your audience pays. The launch trailer frames all of this as an in-character content tier list. It ranks running away at the bottom and filming your friends getting knocked out at the top.
Quick answer: Stream Train is out now on Steam. It is a co-op horror game where you film monsters for a live chat, earn donations, and spend those funds on tools and train operations.
Stream Train’s core loop: danger for viewers, viewers for funds
The game calls itself “A NEW SOCIAL GAME,” and the social part is literal. Every player carries a phone or camera, and an active stream chat watches what you do. Your job is to travel from stop to stop aboard the train, hop off, and go looking for something worth broadcasting. That means abandoned cabins, haunted houses, a campsite full of tents in the woods, and whatever is lurking out there.
Content quality ties directly to viewer count, and viewer count ties directly to money. High-danger footage brings in donations, which become the funds you spend in the shop. Safe, boring play keeps the numbers flat. The chat also issues demands on screen, with prompts like “OBEY THE CHAT,” “GO TOGETHER,” “GO CLOSER,” and “GO VIRAL” pushing the group toward riskier behavior.
An earlier announcement trailer showed the same pressure from the other side. A streamer asks chat whether the group should head back to the train, a viewer replies “no,” and the viewer count climbs during the chaos that follows. In that footage, a wall monitor tracks viewers rising from 195 to 1,546, and later spiking to 4,060.
The Stream Train content tier list, F to S
A green-haired streamer walks the audience through the rankings. Each tier maps to a type of activity in the game, and the order doubles as a rough guide to what earns the most attention from chat.
| Tier | Activity | Chat prompt shown |
|---|---|---|
| F | Running away | OBEY THE CHAT |
| D | Train duties and sightseeing | None |
| C & B | Haunted houses and pranks | GO TOGETHER |
| A | Provoking monsters on camera | GO CLOSER, GO VIRAL |
| S | Filming downed teammates | None |
F tier is fleeing from danger. The trailer shows streamers sprinting away while chat scolds them for cowardice. In a game that pays you for footage, retreat is the least valuable thing you can do.
D tier is for the stretches spent going from stop to stop: feeding coal to the furnace, sounding the whistle, and watching the scenery. Though these jobs have to be done, chat isn’t entertained by them.
C and B tier share a slot. They include exploring haunted houses and ruins, plus pranking teammates with exploding items. One clip shows a lit fuse right before the “GO TOGETHER” prompt appears.
A tier means getting close to the monsters. Players walk right up to massive horned beasts with their cameras raised, which is exactly what chat asks for.
S tier is filming a teammate after they get knocked out or killed. The trailer pairs this with a stream donation goal that revives the fallen player once it is met. A teammate’s misfortune becomes the most profitable content in the game, and the way back from death runs through your audience’s wallets.
Running the train in Stream Train
The train is your base and your transport, and somebody has to keep it moving. The trailer shows each control as a labeled interaction inside the locomotive cabin.
- COAL, picked up with the “[E] GRAB” prompt
- FURNACE, which shows a “BUSY” state while fueled
- THROTTLE and BRAKE for controlling speed
- WHISTLE, sounded with the “[E] PULL” prompt
Interaction prompts appear in green. The announcement trailer also showed crew members reading gauges and fuel levels inside the cabin, then climbing out onto the roof while the train was moving.
Stream Train shop items and prices
Donation money lands in a “FUNDS” balance that you spend in the shop, either on gear or on train operations and upgrades. The shop screen in the launch trailer lists four tools.
| Item | Price |
|---|---|
| SPADE | 20 |
| HAMMER | 20 |
| PICKAXE | 20 |
| DYNAMITE | 120 |
Dynamite costs six times as much as the basic tools. Given how much the trailer leans on explosive pranks between teammates, it is easy to see where some of that money goes.
The Stream Train streaming HUD
While you film, the screen turns into a broadcast overlay. A white reticle marks the camera viewfinder, and the rest of the interface keeps the audience in view at all times.
- A live viewer count
- Scrolling chat comments, which can be read aloud by text-to-speech
- Donation notifications
- A health counter
- A three-slot inventory hotbar
- “DROP / THROW” on [Q] and “DEPLOY TRIPOD” on [G]
The tripod option lets you set the camera down instead of holding it. Stunned or knocked-out players get spinning stars above their heads, which makes them easy to spot and film.
Stream Train release and platform
The launch trailer closes on the Stream Train logo, a Steam badge, and the line “OUT NOW ON STEAM.” Half Past Yellow both developed and published the game, and the closing credit carries a 2026 copyright. The earlier announcement trailer ended by asking players to wishlist it on Steam, so the game has now moved from wishlist page to full release. Steam is the only platform shown in either trailer.
The characters are cartoonish streamers in pink, green, purple, and white hoodies, with bright hair and exaggerated faces. That art style sits on top of a game that rewards you for bad decisions in front of a crowd. If your friends are willing to be the S-tier content, Stream Train seems designed to make that pay off.
