: You can switch a world from single-player to online multiplayer at any time with a simple toggle, allowing friends to join your current progress.

One of the most interesting and unique features of 's online multiplayer is its persistent character system , which allows you to take a single character—complete with all their gear and skill levels—across different servers and single-player worlds.

: The robust building system allows for massive community projects, ranging from medieval fortresses to "modern" minimalist houses that utilize hidden features like concealed workbenches and lighting.

: A "Manage Saves" menu allows you to handle backups and cloud saves directly within the game interface, which is especially useful for maintaining server stability without manual file editing.

See how multiplayer and advanced building features look in action: How to have Fun in Valheim JP Valheim YouTube• Oct 1, 2025 Key Features of Valheim's Online Play