tie-in

• tie in

From tie + in.

tie-in (plural tie-ins)

1. Something that is related or connected to another thing.
2. An authorized product based on a media property, such as a film or video game, by way of cross-promotion.
   • 1986 December, Max Phillips, “Backlash”, in Your Sinclair:

     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.

   • 2008 June 30, Michael Chapman; Matthew Chapman, “The Baloneyman”, in Homestar Runner‎, spoken by Bubs (Matthew Chapman):

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

3. An association or connection between things.