Rain Cleans Blood makes rain and snow gradually wash away blood, dirt, ash and animal droppings in Project Zomboid. Weather also cleans clothing and vehicles in Build 42+. Customize cleaning speed, weather intensity and affected surfaces through sandbox settings. Supports multiplayer and existing saves.
Contents
Rain Cleans Blood introduces a natural cleaning system to Project Zomboid, allowing rain and snow to gradually remove blood, dirt and other traces of the zombie apocalypse.
Instead of leaving permanent bloodstains around your base, the environment slowly becomes cleaner as the weather changes. The system also affects burned remains, animal waste and, in Build 42, clothing and vehicles.
The modification is fully configurable, supports multiplayer and can be safely installed or removed from existing saves.
What Does Rain Clean?
The addon handles several types of environmental contamination.
- Bloodstains - Blood on the ground, walls and floors gradually disappears.
- Burned remains - Ash left behind by burned corpses is removed.
- Animal droppings - Dung on the ground is cleaned in Build 42 and newer.
- Clothing - Rain and snow gradually remove blood and dirt from worn clothing in Build 42+.
- Vehicles - Blood on nearby vehicles is washed away in Build 42+.
These changes help the game world recover visually after combat, fires and other messy events.
How Does the Cleaning System Work?
Every in-game minute, the modification checks the current weather conditions.
If the intensity of rain or snow reaches the configured threshold, the system randomly selects nearby tiles and gradually cleans them.
Clothing and vehicles are processed incrementally during the same update.
Cleaning is gradual rather than instantaneous, creating a more natural effect while minimizing performance impact.
Sandbox Settings
Almost every aspect of the system can be customized.
| Setting | Function |
|---|---|
| Cleaning Speed | Controls how quickly stains disappear |
| Weather Threshold | Sets the minimum rain or snow intensity |
| Tiles Per Minute | Determines how many nearby tiles are processed |
| Ash Cleaning | Enables or disables ash removal |
| Animal Droppings | Controls dung cleaning |
| Indoor Cleaning | Determines whether indoor surfaces are affected |
| Vehicle Cleaning | Enables blood removal from vehicles |
| Clothing Cleaning | Enables cleaning of worn clothing |
| Always Clean | Allows cleaning without rain or snow |
Players who prefer realistic weather-dependent cleaning can leave the default behavior enabled.
Alternatively, the Always Clean option allows stains to disappear gradually regardless of weather conditions.
Multiplayer and Save Compatibility
| Feature | Status |
|---|---|
| Single-player | Supported |
| Multiplayer | Fully supported |
| Server-authoritative cleaning | Yes |
| Existing saves | Safe to add or remove |
| Clothing and vehicle cleaning | Build 42+ |
| Animal droppings cleaning | Build 42+ |
| Additional dependencies | None specified |
In multiplayer, cleaning is controlled by the server, ensuring consistent behavior for connected players.
The addon contains no features that would break existing saves, making it suitable for ongoing survival worlds.
Rain Cleans Blood is a lightweight environmental improvement that makes the world feel more responsive to changing weather. Blood-covered streets, dirty equipment and the aftermath of battles can gradually return to a cleaner state without constant manual intervention.
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