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Indeterminate playtest
by Nikkone
Face off against an indeterminate: a killer with its own traps, rules and horrors to survive. Every indeterminate plays differently, from asymmetrical scare-your-friends hunts to impossible gauntlets to co-op journeys for two. No two nights are the same.
Anyone with a Steam account can join, and it's free.
- Access
- Instant
- On playtest since
- Oct 8, 2026
- Planned release
- To be announced
- Developer
- Nikkone
- Platforms
- Windows
- Players
- Multiplayer, Online PvP, PvP, Single-player
- Languages
- English, French, German, Japanese and 5 more
How to join the Indeterminate playtest
- Open the game's Steam page with the Join playtest button. Sign in to Steam if it asks.
- Use the Indeterminate playtest signup there. You're in straight away, with nothing to pay.
- The playtest shows up in your Steam library, ready to install and play.
New to playtests? How Steam playtests work
How AI is used
GenAI art: indeterminate power icons, portraits, journal, some paintings, every anomaly frame, grave anomalies, Entity jumpscares, anomaly jumpscares. GenAI models: Meshy models and motion, the Tripo mirror, the AI-assisted Wendigo, TTS voices. Some GenAI assets will be rotated out as development continues.
The developer's own words, from Steam.
About Indeterminate
Indeterminate is a multiplayer psychological horror game made with one goal in mind: scaring your friends.
Every night, you face an indeterminate: a killer with its own traps, its own rules and its own kind of horror. Some let one of your friends become the monster. Some put you through an impossible gauntlet. Some you can only survive together. No two nights are the same.
CHASING GHOSTS (asymmetrical)
One of you is the indeterminate. Everyone else has to work out what it is. Every indeterminate leaves its own trail of evidence: freezing or burning temperatures, spikes in electromagnetic activity, a heartbeat that slows for no reason, sounds that shouldn't be there, and things that only show up on camera. Log every clue in your journal, rule out the suspects one by one, then gather the ritual items and banish it. Just make sure you suspected right.
All the while, you're unlocking your way through the building under constant pressure from its traps and jump scares. Every scare chips away at your sanity, and with proximity voice chat you'll hear your friends screaming through the walls, or worse, you won't hear them at all.
As the indeterminate, sabotage the investigation by any means necessary. Spawn anomalies that eat away at their sanity, set traps and ambushes unique to your killer, or catch someone off guard and kill them on the spot. Then choose how you hunt:
- Shape-shifter: hide in plain sight in human form.
- Vendetta: condemn one survivor and make them your personal target.
- Saboteur: cut the power and turn the building itself against them.
Each indeterminate has its own powers and its own tells, so no two hunts feel quite the same.
OPEN HOUSE
One of you is The House, and everyone else is a guest. He pulls you into his casino and deals the games himself: Musical Chairs, a mirror maze, Walk the Plank, trivia, and worse. Losing means dying, and The House decides how. Whoever's left at the end sits down across from him at the Last Table.
THE OTHER SIDE (co-op for two, first chapter available)
Two of you, two trains, one cavern. On the Night Line, one of you rides with the Conductor and has to stay out of his sight. The other watches him through the walls from the train alongside and talks their partner through each control room's puzzle. Make it to the end of the line, and you still have to cross over.
From the game's Steam page.
