Hmm, okay this is…not entirely a crossover? Well, it was. It started as a crossover. But I ran out of time, so…alright. Originally intended to be a Clockwork Century AU. (Google it friends. It is alternate history, steampunk, civil war zombies.) I had planned on like, full on steampunkery. But as we can see, I only got as far as oil/grease stains. SO. This can double as just a diff. period AU. (Specifically several decades later than the setting of the film.) So…yep. There ya go.