Big Walk supports 2–12 players. The host’s 2, 3 or 4+ option changes how parts of the world work; it does not cap the number of people allowed to join. A two-player world can still accept additional friends up to the overall limit. [faq]

Choose for the people who can stay

Your evening’s planSetting to consider
Two people will play throughout2 players
Three people will remain for the session3 players
At least four will remain4+ players
Five arrive, but only two can stayThe developer recommends thinking about the minimum participating group

The host chooses this setting each time a session starts. It adapts some challenges to the expected number of participants. House House does not name one ideal party size: smaller groups create a more focused cooperative session; larger groups give more people room to participate. [faq]

Can you play solo?

There is no official single-player mode. You can start alone and explore a little, but the game is designed around tasks shared between players and the developer says you will not get far that way. Community solo challenges and speedruns are separate from that intended campaign experience. [faq]

There is also no automatic matchmaking. Arrange your group first, then join the host through the friends list or crossplay Join Code. The same host keeps the world’s progress between sessions.

Keep a small session private

Selecting “2 players” does not restrict the lobby to your two intended people. Use the session password and share it with your group. Passwords became mandatory in version 1.4.9. If someone joins unexpectedly, the host can open Session Details → Moderation Settings to manage participants and change the password. [history] [faq]

If you are putting several devices in one room, read the same-room setup guide before planning the seating. Sound passing outside the game can bypass the communication challenge.