Big Walk, the new co-op adventure from the developers of Untitled Goose Game, strictly enforces a multiplayer-only experience, making it impossible to progress significantly without other players. While players can load into the game's open world alone, the puzzles and core gameplay loop are designed around collaboration, rendering solo play largely pointless.
Further complicating matters, Big Walk does not feature any matchmaking system. This means players cannot be paired with strangers or randoms to fill out their sessions. To play, individuals must arrange sessions with pre-existing friends. Joining another player's game can be done either by hosting a session and sharing a session code, or by joining via an in-game friends list, which integrates with Steam's friend system. This direct connection allows players to jump into a game without a code, provided there is an open slot.
For those eager to play Big Walk but lacking a group of interested friends, the game's subreddit and PC Gamer forums offer community spaces where players are organizing to find others to play with.