tie-in

Something that is related or connected to another thing.

An authorized product based on a media property, such as a film or video game, by way of cross-promotion.

So while it might be pretty neat to see yourself as one of The Young Ones, as Dirty Den, Cobra, Rambo, Scooby or any of a hundred others, it's not really enough to cover up for the real problem with tie-in games.

Brand new for this season! I got the unrecognizable summer movie tie-in sammich!

An association or connection between things.

There was really important and unavoidable tie-ins between the two movements. Sexism is the thing that prevents women from achieving equal status in the world and indeed it's sexism that creates most of the homophobia — the fear of people not playing their proper sex roles.