I’ll start by naming an actor. The next person has to name a movie or TV show that actor appeared in, then name another actor from that same movie or show.
The actor does not have to be the star. They just need to have appeared in it.
Once someone names the new actor, the next person continues the chain using that actor.
Example:
Starting actor: Tom Hanks
Someone could reply:
Toy Story - Tim Allen
Now the next actor is Tim Allen, so the next person has to name a movie or TV show he...