Isn't it kind of funny that Krull is basically a wh40k film
That, Dune and Event Horizon. Though you should probably say Warhammer 40,000 is a Dune boardgame if we’re being like that. My “most filmy” though is still definitely James Purefoy’s Soloman Kane = Warhammer Fantasy. Like literally all you’d need is a few stars of Chaos and you’d be good to go.
Also, Judge Dredd.