Mydayyy-ServerSideMap icon


Shares the Map between all players, synchronizes map when connecting

Last updated a month ago
Total downloads 68838
Total rating 14 
Categories Server-side Client-side Utility Misc Hildir's Request Update
Dependency string Mydayyy-ServerSideMap-1.3.9
Dependants 129 other mods depend on this mod

This mod requires the following mods to function

denikson-BepInExPack_Valheim-5.4.2105 icon

BepInEx pack for Valheim. Preconfigured and includes unstripped Unity DLLs.

Preferred version: 5.4.2105


Valheim ServerSideMap

This plugin completely moves the explored map and created pins to the server. As clients explore, they will send their explored areas to the server who will then distribute it to all connected clients. When a client joins, the server will synchronize the currently explored areas to the client. Pins are shared as well and but default to false and need to be enabled. When pin sharing is used, all newly created pins are send to the server who saves them along with the explored area.

Hildir Update

Due to an unknown reason, the .explored file got wipe and set to zero bytes. If you were using the pin system, you will need to restore a backup of the file. Otherwise, no action is required as it will be regenerated and the explored progress from players will be synchronized when they log back in again.


  1. This mod requires BepinEx
  2. Place the ServerSideMap.dll inside your BepInX plugin folder on your server and client
  3. Restart Server and Client


Valheim changed their folder structure of world/save files and moved the world files to the new place. Due to this you need to:

  • Locate the save folder of your valheim worlds
  • Move the .explored file that belongs to your world to the new location

How it works

(If you didnt read any other text, please at least read this one)

Marker Share:

  2. The config file will be created after your first launch with the new version. You can edit the config files inside BepInEx/config/eu.mydayyy.plugins.serversidemap.cfg
  4. Existing markers from clients are not synced to the server
  5. Every newly created marker will only exist on the server, not on the client
  6. When a client connects, he downloads all markers from the server
  7. When the client disables the sharing of markers, he will opt out of it, others on the server continue to share their markers
  8. When the server turns off marker share, no client will be able to share their markers no matter what they set inside their config file

Map Share:

  1. As usual, existing explored areas are synced to the server and merged
  2. The server sends the current map exploration to the client and the client merged it
  3. When the client disables the sharing of map data, he will opt of it, others on the server continue to share their map exploration
  4. When the server turns off map share, no client will be able to share their map exploration no matter what they set inside their config file

The pin and exploration data is saved along with the map in a new file.

You can toggle marker and map share separately, refer to Marker Share 2&3 for instruction


Currently there are three available chat commands:

  • /convertpins: Uploads all pins which are currently clientside to the server.
  • /convertpins ignorelocaldupes: Uploads all pins which are currently clientside to the server. Pins which have a pin on the server near them are not uploaded. Default radius 15.0, can be adjusted in the config.
  • /deletealllocalpins: DELETES all local pins. Those will not be recoverable, use it when you are absolutely sure you want to do that.

Bug Reports

Please use Github for bug reports and feedback.


Development takes place on github:

You need to copy the following dlls into the Libs folder:

  • 0Harmony.dll
  • assembly_utils.dll
  • assembly_valheim.dll
  • BepInEx.dll
  • BepInEx.Harmony.dll
  • UnityEngine.CoreModule.dll
  • UnityEngine.dll
  • UnityEngine.ImageConversionModule.dll
  • UnityEngine.UI.dll


My kofi can be found here

Available versions

Please note that the install buttons only work if you have compatible client software installed, such as the Thunderstore Mod Manager. Otherwise use the zip download links instead.

Upload date Version number Downloads Download link  
2023-8-26 1.3.9 3322 Version 1.3.9 Install
2023-6-17 1.3.8 5066 Version 1.3.8 Install
2022-6-25 1.3.7 23286 Version 1.3.7 Install
2021-10-16 1.3.6 11916 Version 1.3.6 Install
2021-9-18 1.3.5 4345 Version 1.3.5 Install
2021-4-9 1.3.1 9704 Version 1.3.1 Install
2021-4-2 1.3.0 1987 Version 1.3.0 Install
2021-3-8 1.2.1 5582 Version 1.2.1 Install
2021-3-6 1.2.0 1299 Version 1.2.0 Install
2021-2-27 1.1.4 2081 Version 1.1.4 Install
2021-2-27 1.1.3 250 Version 1.1.3 Install