9-nine-:Episode 4
Supernatural mystery visual novel tying together four parallel-world stories
PALETTE · Published by Sekai Project · Released Mar 19, 2021
- Reviews
- Overwhelmingly Positive
- 97% of 1,628
- Recent reviews
- Very Positive
- 91% of 23 in 30 days
- Players
- 10
- daily peak, Nov 7, 2026
- Steam Deck
- Playable
- Last update on Steam
- 5 years ago
- Mar 20, 2021
What is 9-nine-:Episode 4?
This fourth visual novel episode follows Kakeru Niimi in Shiromitsugawa, where an earthquake releases objects that give people supernatural powers. You read through his investigation across parallel worlds, with Noa Yuuki at the center of this episode. The story assumes you know the earlier episodes.
For you if...
- +you like supernatural mysteries built across several episodes
- +you enjoy character-focused romance alongside a larger plot
Not for you if...
- −you want action-focused play instead of reading a story
- −you want a series entry free of earlier spoilers
- −you prefer steady plot progress over extended character scenes
What players say
97% of 1,628 reviews are positive · 91% of 23 in the last 30 days
Players praise the conclusion, its twists, and Noa's character development. The most common complaint is that the early story moves slowly; some players also find the romance rushed or repetitive.
Screenshots and trailer
9-nine-:Episode 4 system requirements
Minimum: 1280 x 720, 3 GB of disk space.
As published by the developer.
Can my PC run 9-nine-:Episode 4?
The published requirements do not name a graphics card we can compare.
Set up my PC →Minimum
- OS
- Windows 7/8/8.1/10
- Processor
- Core 2 Duo (Core i3 or higher recommended)
- Graphics
- 1280 x 720
- Memory
- 4 MB RAM
- Storage
- 3 GB available space
- DirectX
- Version 9.0c
Does 9-nine-:Episode 4 have co-op or multiplayer?
No: single-player only, no multiplayer modes declared.
Does 9-nine-:Episode 4 run on Steam Deck?
Playable Playable: it runs on Steam Deck with some adjustments.
- Some in-game text is small and may be hard to read
- All functionality is accessible with the default controller configuration
- Default graphics settings perform well on Steam Deck
PC version details
- DRM
- None declared on Steam
- Controller
- Keyboard and mouse
- Platforms
- Windows
- Steam features
- Family Sharing
- Languages
- Full audio: Japanese. Text only: English, Traditional Chinese.
Does 9-nine-:Episode 4 use AI-generated content?
No AI-generated content is disclosed on the game's Steam page.
Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 25, 2026. How to filter AI games on Steam
