RollerCoaster Tycoon 2 - Time Twister

Cheatcodes:
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Rename a guest as any of the following:

Code                Result 
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Simon Foster      - Guest will paint pictures of the park
John Wardley      - Guest will think ''wow''
Melanie Warn      - Guest will be very happy
Damon Hill        - On go karts, this guest will drive twice as fast as others
Chris Sawyer      - Guest will take pictures of the park
Katie Brayshaw    - Guest will wave to other guests
Michal Schumacher - Guest will drive fast on the go karts.
John Mace         - Guest will pay double for everything.
Katie Brayshaw    - Guest will wave to other guests
Mr. Bean          - Slow go-cart driver
Tony Day          - Hungry guest
David Ellis       - Guest will give name of ride in thoughts
Elissa White      - Guest gets exited about Intamin rides


No money needed:
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Submitted by: Ranger

Start to create a new scenario in the editor. After you go through making 
all of the desired settings, click the "No Cash" option then set your 
objective to 500 people in your park. After that, you will not have to 
worry about your cash limit.