When the world is saved
- Every serverAutoSaveInterval minutes while players are on: 15 by default, and 15 is the least the game allows.
- Once, when the last player leaves.
- Not when the server is stopped or restarted. Whatever happened since the last save is lost if you stop it with players on.
- An admin can also save by hand with /save <slot> in the game's chat.
That is why restarts on Flux that the server does for you, the daily one and the ones for game updates, wait for an empty server: the world has just been saved.
The five slots
Each slot is a folder, Slot1 to Slot5, under Multiplayer in the save folder. The server plays the one named by the slot setting. A slot with nothing in it makes a new world when the server starts on it, so starting a new world is "empty a slot and play it".
Moving your co-op save to the server
- On the host's PC, close the game, then open AppData\LocalLow\SKS\TheForest\<SteamID>\Multiplayer.
- Zip the Slot folder you want (Slot1, for example).
- In the Save Slots tab, upload the zip into an empty slot, then press Play on that slot.
Frequently asked questions
Is my world saved when the server restarts?
Not by the restart itself: The Forest saves on its timer and when the last player leaves. The restarts the server schedules wait for an empty server for that reason.
How many worlds can I keep?
Five, one per save slot, and you can download any of them.