01
What the party size refers to
Steam describes a single-player game with an expedition party managed by that player. The group size concerns characters, not network participants. It therefore does not establish a lobby, shared session or online mode. Recruitment footage should not be mistaken for multiplayer setup.
02
The developer's stated direction
The roadmap Q&A addresses multiplayer requests and gives technical, control and design-experience reasons for not expecting to add it. This is a stated development direction from the collected roadmap. It should be attributed to that document rather than expanded into claims about every future game. No multiplayer implementation is demonstrated in the research.
03
Community wishes are not support
A legacy video's author says multiplayer would be interesting. That is a personal wish, not an announcement or a working workaround. No current multiplayer mod was verified. A dependable way to play this game together remains unsupported by the supplied evidence.
04
Co-op
Cooperative play is not established: Steam lists single-player and the roadmap does not anticipate multiplayer. The adventuring party consists of characters controlled within that single-player design.
No tested workaround was collected
The supplied video discussion expresses a wish for multiplayer. It does not demonstrate local or online cooperative play. The research also did not verify a mod that adds it. Any working co-op workaround remains 待确认.