How does game save work?

[Der Liebe Frankie]

When setting up a "friends only" server, does the game automatically save itself periodically? I don't see any option for saving the game so we could leave and continue the game later (and so far we keep dying, so a new world seems to be rolled when I go in again).

[Platapoop]

If you rehost the game, go to the rollback tab. It has 5 saves as default (don't know if changeable). The game saves at the very beginning of each day. I hope that answers your question. You might have more customization options if you host the server yourself.

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[Fecske]

In general, the game saves at the beginning of each day (so it can recover from a crash, or you can rollback if needed), plus when you (or the host) shut down the server. As the host disconnects, the world gets automatically saved and he can relaunch it at any time.
The worlds type is suvival by default. This means that if everyone on the server dies, it gets regenerated, so you'll have a fresh new world with new characters. It also happens if the last living player leaves and only ghosts remain. If you want to keep a world, even if everyone dies, set its mode to endless. It removes the regeneration and you will always be able to revive at the portal. Alternatively, you can set it to wilderness, there the world never resets but each time you die, you get a new character and lose your recipes, so I personally don't like that mode too much.