The Art Of The Perfect Crossover Movie
5. The Crossover Has To Feel Natural
While the sheer insanity of nonsensically throwing together two vastly different properties can have a certain sense of appeal to some curious souls, the more standard approach to making a successful crossover is by pursuing a meeting of two properties for which it seems plausible that they would inhabit the same universe.
To pull a crossover off to a high standard, the coming together of two parties needs to feel completely natural and sensical.
Something like Alien vs. Predator, or Freddy vs. Jason worked well, with both individual properties of those respective movies having a similar feel to them - making it acceptable to audiences that realistically these franchises could exist within the same space. Also, there'd already been pre-crossover seeds in both cases - Predator 2 seeing a Xenomorph skull mounted as a trophy, and Jason Goes to Hell's final shot seeing Freddy Krueger's iconic glove making an appearance.
It's one thing for a crossover to feel natural, yet it's another matter entirely as to whether the crossover itself is actually constructed in a way that delivers an appeasing final product. Particularly, the two Alien vs. Predator movies have some major flaws, despite the two properties feeling like a natural fit together.