Valheim developer Iron Gate is advising all players backup their characters and worlds after discovering a "world-destroyer" bug is resetting progress.
In a tweet, CEO Richard Svensson explained how players can make backups and avoid losing their data to the bug, confirming that despite trying to reproduce it and address the glitch, the team hasn't yet been able to do so. However, Iron Gate suspects it may be connected to exiting the gaming by ALT+F4 and not via the menu.
"If you are playing Valheim this weekend, please backup your world and characters," Svensson said. "The evil world-destroyer bug is still roaming free =(.