About Underwater
From ThunderstoreAllow players to go underwater.
Adds an option for players to walk along the seafloor instead of swimming at the water surface. This option can be changed in the mod config or by pressing the Backspace key in game (key can be changed in config).
This mod was created primarily to assist with placing building pieces underwater. I may try to add diving controls in the future, but for now the options are to swim on the surface or walk on the bottom.
Run the game once with the mod enabled to generate the config. See config for details on what each option does.
This is primarily a client side mod. It may also be installed on a server to sync configurations. A server may optionally require that clients have the mod installed via the ConditionalConfigSync.ModRequirements.cfg file in the ConditionalConfigSync config directory.
Some configuration options can be enforced by a server running ConditionalConfigSync. See included ConfigSync_Readme.txt file for more information.
Installation
This mod uses BepInExPack Valheim as a mod loader. You can use any BepinEx compatible mod manager to install the mod, or manually place it in the BepixEx plugins directory.
Highlights
From source dataLoaders
Runs on BepInEx.
Footprint
Rated a light load on a server.
Dependencies
Needs 3 other projects installed alongside it.
Underwater on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Valheim servers, for BepInEx servers. We download it from Thunderstore, place it, and restart the server.
- Server type needed
- BepInEx
- Server load
- light
- Smallest plan we suggest
- Valheim — 4 GB (4 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.2.4, released 2026-09-14
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| BepInEx |
From 16 recorded builds of Underwater.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.2.4 | 2026-09-14 | n/a | BepInEx |
| 1.2.3 | 2026-09-13 | n/a | BepInEx |
| 1.2.2 | 2026-09-11 | n/a | BepInEx |
| 1.2.1 | 2026-09-11 | n/a | BepInEx |
| 1.2.0 | 2026-09-10 | n/a | BepInEx |
| 1.1.0 | 2026-09-10 | n/a | BepInEx |
Dependencies
- Required: BepInExPack Valheim
- Required: ConditionalConfigSync
- Required: CrystalLib
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Underwater on a Valheim server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogGameplay & overhauls
New mechanics, content and overhauls that change how the game plays.
Compatibility
- Game
- Valheim
- Loaders
- BepInEx
- Requires
- One-click install needs a BepInEx server. 3 other projects installed alongside it.
Verified at the source
- ✓ThunderstoreOfficial listing, checked 2026-10-01Open ↗
- ✓AuthorCrystal, as published on Thunderstore
- ✓LicenseNot published by the sourceFree






