Injection No.9 - Chapter 1 (The Prologue)
Injection No.9 - Prologue is the first standalone episode of a psychological horror series. Investigate a decaying asylum after an anonymous tip, with only brief messages guiding you as reality breaks apart.
Last Updated: 10/15/2025
| Steam Price | $4.99 |
| Release Date | 6/1/2025 |
| Developer | Ragdoll Games |
| Publisher | Ragdoll Games |
| Steam App Id | 3731240 |
Injection No.9 - Chapter 1 (The Prologue)
Injection No.9 - Prologue is the first standalone episode of a psychological horror series. Investigate a decaying asylum after an anonymous tip, with only brief messages guiding you as reality breaks apart.
Last Updated: 10/15/2025
- Windows
- Mac
- Linux
About Injection No.9 - Chapter 1 (The Prologue)
Injection No.9 - Chapter 1 (The Prologue) is an Action, Indie, Adventure, and Simulation game developed by Ragdoll Games. On 6/1/2025, it was released on the Steam Store by Ragdoll Games.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
According to Steam’s category system, Injection No.9 - Chapter 1 (The Prologue) supports the following features:
- Surround Sound
- Stereo Sound
- Single-player
- Family Sharing
From the Steam community, Injection No.9 - Chapter 1 (The Prologue) has been tagged with the following user tags:
- Supernatural
- Interactive Fiction
- Dark
- Story Rich
- Psychological Horror
- First-Person
- Conversation
- Mystery
- Simulation
- Horror
- Detective
- Sci-fi
- Indie
- Thriller
- Adventure
- Demons
- Action
- Singleplayer
Media & Sceenshots
Watch the featured video for Injection No.9 - Chapter 1 (The Prologue) and see the latest screenshots from the Steam Store.
Related Packages
Injection No.9 - Chapter 1 (The Prologue) is referenced by 1 package in the Steam Store. A package (or sub) is simply an item that can be purchased on Steam.
| Name | Price | Actions |
|---|---|---|
| Injection No.9 - Prologue | $10.99 | View |
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Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in real-time to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
Injection No.9 - Chapter 1 (The Prologue) data has been sourced from:
- Valve Corporation. (2025, October 15). Injection No.9 - Chapter 1 (The Prologue) on Steam. Steam Store.
- Valve Corporation. (2025, October 15). Injection No.9 - Chapter 1 (The Prologue). Steam Community Hub.
- Ragdoll Games. (2025, May 14). Injection No.9 - Chapter 1 (The Prologue). Injection No.9 - Chapter 1 (The Prologue).