Well, let's say if there was to be a hypothetical Hasbro theme park, it would utilise a lot of its games and toys. They have so many iconic and beloved properties, I'm surprised they haven't gone into the park business independently.
Amongst their IP include Transformers, My Little Pony, G.I. Joe, Power Rangers, Dungeons & Dragons, Action Man, Beyblade, Furby, GoBots, Hamtaro, Inhumanoids, Jem and the Holograms, Kre-O, Littlest Pet Shop, MASK, Micronauts, Nerf, Play-Doh, Pound Puppies, Rom the Spaceknight, Spirograph, Stretch Armstrong, Visionaries, Yo-Kai Watch, Zoids, and tons of board games like Monopoly, Battleships, Buckaroo, Candy Land, Cluedo, Guess Who, Hungry Hippos, Magic: The Gathering, Operation, Ouija, Risk, Scrabble, and Trivial Pursuit. Pretty good line-up.
I can easily imagine Transformers and My Little Pony getting their own lands, and the board games could have a collective one similar to Toy Story Playland made of giant games. Certain hero-based franchises and animal-based franchises could have their own lands. Hasbro design Sesame Street, Star Trek, and Ghostbusters, so these properties could appear too. Dungeons & Dragons is popular enough to earn itself its own attraction or land, though I know zip about it beyond its reputation.
