Do this first
The quick route
- Choose the person who will keep the group's save and have them host.
- The host selects the 2-player, 3-player, or 4+ version of the world.
- The host opens Session Details and copies the current Join Code.
- Guests enter the current Join Code and the host's session password.
- Keep the host online; ending the host session disconnects everyone else.
Where the host finds the Join Code
Before starting, the unique code appears in the corner of the host menu. After the game begins, open the in-game menu and choose Session Details. Do not show the code or password on a public stream: anyone who knows both can attempt to join.
When friends-list joining is easier
If the host is already on your platform friends list, their active game should appear in the friends-game menu. The Mac App Store version does not support Game Center discovery, so those players need the Join Code route.
Choose the host with future sessions in mind
The host owns the save for that journey. When the host ends the session, guests disconnect; to resume from that save later, the same host needs to start it again. Pick someone likely to be present for the group's regular play time.
Sources checked
Where this answer comes from
Official joining, Join Code, password, hosting, and world-size rules.
OfficialBig Walk Version HistoryOfficial version 1.4.9 Session Password change.
Platform supportBig Walk for Nintendo Switch 2Online play and 2–12 player product details.
Links and claims last checked August 31, 2026. Community sources describe reported symptoms, not guaranteed fixes.