Rename a guest to one of the following names to obtain the corresponding effect:
| Effect
| Name |
| All guests ride every coaster before leaving | Sam Denney |
| Guests stand around looking down at the ground [Note 4] | Mouse |
| Unknown | Rick Griffiths |
| Display frame rate | FPS |
| Get the buggy to ride through the park [Note 4] | James Hunt |
| Unknown | Sun loungers |
| Lots of ducks appear [Note 4] | A Hitchcock |
| Display frame rate [Note 2] | FPS |
| Peep jumps for joy [Note 4] | Chris Sawyer |
| Increase money by $10,000 [Note 4] | John D Rockefeller |
| Build next to paths and allow fences next to paths | M Brookes |
| Peeps dance [Note 4] | Shifty |
| Unknown | Jacuzis |
| All guests get sick [Note 4] | Make Me Sick |
| Unknown | Loner |
| High pitched sounds | Alistair Lindsay |
Everyone moves fast for 20 seconds, but game speed is
normal [Note 4] | ATITech |
| Train all staff for $1,000 [Note 1] | Isambard Kingdom Brunel |
| Unknown | Showers |
| "Flying Camera" routes editor [Note 4] | D Lean |
| Unknown | Hgih Dives |
| Decrease track friction [Note 3] | Andrew Thomas |
| All rides irresistible to peeps [Note 4] | Jon Roach |
| Infinite launch and chain lift speeds [Note 3] | David Braben |
| Unknown | David Walsh |
| All coasters irresistible to peeps | Sam Denney |
| Unknown | Diving Boards |
| All rides and coasters to never break down [Note 4] | Frontier |
| Unknown | Mornington Crescent |
| Removes height restrictions for building coasters [Note 4] | John Wardley |
New guests not allowed to enter, current guests may
leave if desired | Ghost Town |
| Peeps take photos [Note 4] | PhotoStory |
| Big explosion | Atomic |
| No guests can enter park [Note 2] | Ghost Town |
| All peeps laugh [Note 4] | Atari |
| Peep cam; see through eyes of guest [Note 4] | Jonny Watts |
| Track friction is zero [Note 3] | Andrew Gillett |
| Unlock advanced fireworks editor [Note 4] | Guido Fawkes |
