Ask before advising
A suggestion can be welcome, but constant direction can leave another player merely moving pieces. Ask whether they would like ideas before offering a complete plan.
Make the goal visible
Start with the common objective and the main way the game can end. Players need enough context to understand why a decision matters, even if the details become clearer through play.
Keep each role meaningful
If a game gives people different roles, explain the practical difference without assigning one person to be the permanent expert. Let players own the choices their role creates.
Treat an error as information
A mistaken move can reveal a rule that needs another example. Agree how to handle a newly discovered rule before quietly changing it for some players and not others.
Finish with a shared reflection
Ask which moments made collaboration feel good and which felt crowded. The result of the game is only one part of the experience.