Here's a preview from a German site with two screens on the page:
http://www.gzone.de/reviews/strategie/rollercoaster_loopy.htm Here is a translation of the main text: [credit Daniello of Danimation]
"Instead of this there are many new attractions and scenarios available: 20 new tasks are waiting for you, and 3 real parks to modify (including the Heide Park {that is a well known german park}). In addition there are six new themes and, of course, lots of new attractions and stalls.
Almost the most important new feature is the change of scenario-goals. In some scenarios you still have to get as much visitor as possible in the park until year X. Already in the second task you have to complete five started (not finished) rollercoasters - everyone has to get an excitement-rating of at least 6.70! Later in the game those numbers increase - it is, for example, 10 rollercoasters then with an excitement rating of 7,00 each! Another goal is to get a special ammount of money every day - then it is not enough just to get people in the park by advertising... you gotta spend some money then as well.
The additional Changes are of the category "nice details". So you can change the entrances to "wooden" or "circus" theme, depending on the themes you already researched. Same with the entertainers who get new costumes, as well as the music, with wich you advertise your attractions. Even the main menu was re-designed to be more clearly defined. All scenarios of the original game and the add on are now listed next to each other."
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Beeman65
Co-Webmaster
Kennywood Park Unlimited
http://kpu.danimation.com