Several cheats
Change the name to one of the visitors to your park to obtain the following effect:
Make me sick: all visitors get sick and vomit.
Atari: all visitors laugh.
Mouse: All visitors go around looking at the ground.
Frontier: Attractions are never broken.
Atomic Big Explosion: Great Explosion after colliding a Russian mountain.
Atitech: All characters (including employees) move at full speed.
Guido Fawkes: access to the advanced fireworks editor.
John D Rockefeller: gives you 10.000 $.
Chris Sawyer: visitors jump happy.
D Lean: Open the “Flying Camera” route editor.
Jonny Watts Peepcam: You see the world through the eyes of that visitors.
Sam Denney Peeps: Mount all the Russian mountains.
Jon Roach Peeps: Mount all attractions that are not Russian mountains.
John Wardley: Eliminates height restrictions to build Russian mountains.
David Braben: Unlimited speeds.
James Hunt: driving a buggy.