Build the city's greatest theme park, whatever it takes, with more themes now available for your park with Unfair Expansion: Alien B-movie Dinosaur Western, with these themes being mixable with old favorites and with each other. The new themes are:

Alien: Build superior alien technology in your park, and pay for it with an entirely new currency provided by our beloved overlords. Ignore the spate of unexplained disappearances — it's nothing.
B-movie: Mash up themes and re-use their best parts to make the most awesome awful movies in town. Filming in panorama-vision is now available for extra value.
Dinosaur : Discover a mysterious valley filled with living dinosaurs that offers exciting new attractions...for a park owner willing to take the risk.
Western: Make a stand, build a better life for yourself, strike it rich, and get robbed by outlaws in the wild west.
You can also tailor the game to suit your preferred play style with a range of new game changer cards.