Do You Need a New World for Valheim 1.0? Old Saves and Deep North

You do not need to start a new world for Valheim 1.0. Your old saves work and the Deep North will be accessible from them. However, the devs strongly recommends starting fresh. New biomes can only be found in unexplored areas of your old saves, so already-explored regions of your map will not load new terrain features. Achievements also require starting from the 1.0 download point, meaning your kills and milestones from old saves do not count.

Valheim 1.0 launches September 9, 2026, ending over five years of Early Access and bringing the Deep North as the game's final biome. With a release this significant, the natural question for most players is whether your existing saves can carry through to the end or whether you need to start over. While the answer is technically no, but practically it depends on how far you have progressed in-game. So, to help you clarify these doubts, we've provided a complete breakdown below.