I've looked at many main menu replacers but they all use the same technique: drop a new MainMenuLoop.bk2 file into data/video. Given the game's age, that might be the only option. But just in case, does anyone know where I could find the actual call for the bk2 file? Is it in the CK, or maybe a vanilla script somewhere? I poked through the CK categories for a while but didn't see anything obvious. I'm interested in fiddling with randomization of that main menu video. Essentially, I'd like FO4 to pick from a handful of available main menu videos and choose one at random. First step is to determine if that's even technically feasible.