Fantastic Beasts and Where to Find Them
Imagine being dropped into the middle of 1940s New York, knowing that there were a ton of magical creatures on the loose and it was all your fault. Now take that premise and place it into an open world title that sees you following the trails of said creatures in order to work out their locations, before safely and discretely catching them. The muggles would have no idea!
Essentially, take the Witcher contracts from The Witcher 3, and magic them up a little bit. Alternatively, it could go down the more mechanically complex route of a Monster Hunter title. Either way, an open world game set in the Fantastic Creatures universe, if done well, would be one movie tie-in that certainly wouldn’t suck. Heck, it doesn’t have to even stick to the few creatures shown in the movie. There are plenty of magical creatures in the Harry Potter universe that would make ideal escapees.