Summary
Valheim world modifiers are a way to directly affect how the game is played on Valheim worlds, either in single-player or multiplayer on large servers. Many modifiers, such as custom Portal Settings, resource rate, and enemy difficulty, are available. While all of these settings can be tuned individually, selecting a preset will start the server from a baseline, and players who would like more customization can toggle any individual settings to override the preset modifiers.
How to Use World Modifiers on a Valheim Server
1. Log in to the BisectHosting Games panel.
2. Go to the Startup tab.
3. Stop the server.
4. Navigate to the Preset Modifier section. 
5. Toggle the setting On, then select a preset according to the table below.
| Note | Individual startup panel modifiers will overwrite any changes made by presets. |
6. After choosing a preset, Start the server.
| Modifier Preset |
Settings Affected by Preset |
Easy |
 |
| Hard |  |
Hardcore |
 |
Casual |
 |
Hammer mode |
 |
Immersive |
 |
