Under the River: The Borrowed Skin-She saved you—but turned you into a monster. You live on, wearing her skin as your body rots. To survive, you must devour her. One begs you to eat her. One begs you to stay human. What will you choose?
| App ID | 4021870 |
|---|---|
| App type | Game |
| Developer | 夜火游戏（Night Fire Game） |
| Publisher | 夜火游戏（Night Fire Game） |
| Release date | 6 March 2026 |
| Release state | released |
| Content descriptors | Some Nudity or Sexual Content, General Mature Content |
| Localized names | english Under the River japanese 聊斎：水底の乙女 tchinese 聊齋：畫皮鬼 |
| Store page | store.steampowered.com/app/4021870 |
| Last store refresh | 5 hours ago |
Launch options
| # | Executable | Arguments | OS | Description |
|---|---|---|---|---|
| 0 | Under the River 1.0.exe | windows |
Playing now
5
Updated 2 hours ago
24-hour peak
5
Highest recorded in the last 24 hours
All-time peak
5
12 September 2026 08:48 UTC
Hourly peaks, UTC. All-time peak covers SteamRaw's recorded history.
Regional prices
All Steam store regions, converted to USD at today's exchange rate, compared with the US price. Lowest is the lowest price SteamRaw has recorded for that region.
Loading regional prices…
Price history, US store (USD)
| Date | Price | Regular | Discount |
|---|---|---|---|
| 12 September 2026 06:44 UTC | $5.99 | $5.99 |
| DLC | AppID | Release | Price |
|---|---|---|---|
| Under the River | 4161460 | 19 Dec 2025 | Free |
Branches
| Branch | Build ID | Description | Updated | Password |
|---|---|---|---|---|
| public | 22442721 | 21 March 2026 04:09 UTC |
Depots
| Depot | Name | OS | Size | Download | Public manifest | Notes |
|---|---|---|---|---|---|---|
| 4021871 | windows | 4.10 GB | 2.61 GB | 4944420095860670231 |
A build is one published version of the game's files on a branch. Steam assigns a new build ID every time the developer pushes an update, so this list is the update history of the app. The files inside a build (depot manifests) are only readable with an account that owns the game, which SteamRaw does not have yet, so build contents are not shown.
| Build ID | Branch | Updated | First seen |
|---|---|---|---|
| 22442721 | public | 21 March 2026 04:09 UTC | 6 hours ago |
Every appinfo change SteamRaw has observed, grouped by changelist. Tags, features, languages, builds, depots, prices and any other key Steam publishes. Tracking since at least 12 September 2026 05:44 UTC (estimated from the earliest recorded change; the exact first fetch was not stored).
No changes recorded since SteamRaw first saw this app. Every future PICS change will be listed here.
| Changelist | Apps | Packages | Seen | What changed |
|---|---|---|---|---|
| No changelists recorded for this app yet. | ||||
No news for this app.
Full appinfo as delivered by Steam PICS, changenumber 38600303. Also at /api/app/4021870/raw.
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