I went on the mulimedia media board and all I saw on the first couple of pages were mostly youtuber threads with a mix of threads for some new movies and some generals for shit like anime or Star Wars. The posts I saw were all pretty surface level to begin with. In general, most of the movie or tv show threads with multiple pages (not counting new releases) in the first couple of pages are for either popular shows, popular movie series, or general topics like horror movies. If I wanted to discuss some random older movie I liked like say Lawrence of Arabia or No Country For Old Men I would either post it in a general thread and hope that I get a reply or two or make a thread for it that will immediatley die. At least on /tv/ I can make a thread for a movie I like and it will probably get a decent amount of replies.
I went on the Joker 2 thread here since I mentioned I thought that /tv/ shiposting was really funny and look what I saw!
In regards to the game board, I checked a couple of threads and most of the discussion was pretty much the same as I can find on /v/ albeit much slower. Again though most of the threads in first couple of pages were for very popular games or franchises. I checked the Halo thread since I'm a big Halo fan and they recently announced that they were changing their studio name and moving to unreal. Guess what I happened to see again!