Hidden Animations- Type in these names to any of your guests:
Chris Sawyer- Has your guest take pictures of himself.
Simon Foster- Has your guest paint pictures like the guy with the fro on TV.
Melanie Warn- Makes your guest become as happy as possible and may convince him to stay longer and spend more money.
Katie Brayshaw- Has your guest wave to everyone he meets.
John Mace - Double Pay for rides.
John Wardley - WOW Thinking.
Damon Hill - Faster Go Karts.
Mega Park- Finish all the levels to aquire the Mega Park.
Help Riders- To help riders coming off the coaster, place benches near the coaster exits. This will help sick quests getting off the coaster.
Penny Pinching- When there are weeds growing out of the grass don't waste money on handymen, just click on the raise/lower land icon and select grass and the weeds will disappear and it won't cost you a penny.
More Cash- To make some more money set bathrooms beside the roller coasters and charge people for it. Also put a ballon stand wherever you see lots of people going.
Einstein for Hire- To extend your research by a significant amount, find guest #1 and rename him "E=MC2". Then find guest number #2 and rename him "E=MC3". The two will meet and begin brainstorming. Shortly after they will be asked to be hired as the parks research developers. Say "Yes" and pour your reasearch into the think tank. The following year, research and developement will have grown by leaps and bounds. You should have nearly all the newest rides and a billion dollars to spend.
Get All Parks- At the main menu press and hold Shift, then yupe in "rct2" and press Enter. NOTE: may only work for some versions.