Gimme Some Money:
Press L + Up, L + Down during game play. $10,000 will be added to your finances.

Gimme Lots Of Money:
Press L, Right(2), L, R, Down during game play. $250,000 will be added to your finances.

Where's The Money?:
Press L + R, Down during game play. Your finances will be reduced to zero. Alternately, press L, R, L, R, Down(2) during game play.

Market Day:
Press L + R + Down during game play. The market will now be instantly restocked with fossils. Alternately, press Down, L, R, Down during game play.

Open To The Public:
Press Left, Down, Right, Up, L + R, L + R during game play. You can now select your three digsites without the required stars.

Seal Of Approval:
Press Right, L, Up, L(2), Down during game play. Your park rating will increase by one star.

Three Stars:
Press L, R, Down(2), L, Right during game play. Your park will have a three star rating.

Guaranteed Immunity:
Hold L + R and repeatedly tap Up during game play. Dinosaurs will no longer get sick. In the PAL version of the game, press Up(2), R, L, Up(2) during game play.

Plague Outbreak:
Press Down, Up, Down, Left, R(3) during game play. Your dinosaurs will become diseased.

Rampage Time:
Press L(3), Left(3) during game play. All carnivores will become stressed.

Pax Jurassicus:
Press L, Left, Up, Left, Up, Left, L during game play. Rampages will no longer occur.

Crash!:
Hold L + R and repeatedly tap Up, Down, Up, Down during game play. One of your safari cars will blow up. Alternately, press R, L, Up, Down, Up, Down during game play.

Sequencing Error:
Press Down, R + Up during game play. This will set all dinosaur DNA to 55%.

Mr. DNA:
Press R, Up, R, Right, L, Down during game play. This will set all excavated dinosaur DNA to 100%.

Exodus:
Press L, R, L, Right, Down, R during game play. This will set all excavated dinosaur DNA to 0%.

All Research:
Press Down(3), Left, Right, L, Down, Up during game play. Everything will be researched.

Oh No!:
Hold R and press Right, Left, Right, Left, Right during game play. All tourists will die. Alternately, press Left, Right, Left, Right, R during game play.

Impossible Mission:
Press R, Right(4), R during game play. All missions, exercises, and Site B will be unlocked.

Driveby:
Press R + L, Left, Down, Right(2) during game play. You can now shoot from the safari cars by using the camera.

Isla Muerta:
Press R(3), L, Right during game play. Dinosaurs will now appear to be the living dead.

Hot One:
Press R + Down, R + Down during game play. A heat wave will occur.

Welcome To Melbourne:
Press R(2), L, R, Down, Up, Down during game play. The weather will get stormy.

Storm Free:
Press R(2), Left, Right, Up, Right during game play. Storms will clear up.

No Twisters:
Hold L + R and press Left, Right. Release L + R, then press L + R again during game play. Alternately, press Left, Right, L, R during game play.

Dial-A-Twister:
Press Left, Up, Right, Down, L + R during game play. A twister will appear on the island.

Extinction Event:
Press L, R, Down, R, L during game play. All dinosaurs will be killed.

No Red Tape:
Press L, R, Left, Down(4) during game play. If anyone dies, you will not get charged no matter if you are in emergency mode or not

Happiness Is...:
Press R, Down, L, Up(3) during game play. Your visitors will be happy.

Instant Alcatraz:
Press Down(2), Left, Right, L(2), Up(2) during game play. Your fences will have low security.

Minimum Security:
Press L, Left(2), R(2), Right during game play. Your fences will have high security.

Ooops!:
Press Up, R, Down, L, Left(2) during game play. All fences will be destroyed.

Rocky Road:
Press Right(2), R(2), L, Down during game play. All paths will be damaged. Note: Make sure there are no visitors on a path when this code is enabled.

Hint: Site B:
To unlock the Site B option at the main menu, successfully complete all the missions.

Hint: More visitors:
If you want more people to visit your park, build four or five entrances on all different sides.

Enable the "Seal Of Approval" code to get five stars. Put as many entrances as you can, then open your park. The chopper should appear instantly, and lots of people should walk through the entrance.

Hint: Avoiding visitor deaths:
Never build a Safari Adventure in your T-Rex cage. The visitors inside of the car will not live too long. Never put more than one T-Rex in one cage. One will be killed and the other badly injured; and the visitors around the cage will get scared to death. This costs you a lot of money, for the T-Rexes and the fines.

Hint: Saving money:
To save a little money, build a small enclosure around a hatchery. When you hatch a dinosaur, sedate it, and move it to its cage.

Hint: T-Rex: DNA:
To get some T-Rex DNA, unlock Judith River Formation B and put your dig teams there. They will find T-Rex remains.

Hint: Spinosaurus: Rampages:
Spinosaurus always go on a rampage sooner or later. Be prepared to kill one and hatch a new one. Never put more than one Spinosaurus in a cage. If you do, one will go on a rampage in the first few months. Never put a Spinosaurus in with other large carnivores. The Spinosaurus or the other type of dinosaur will go on a rampage.

Hint: Rescue The President level:
Shoot the Raptors first. Then, run fast and escape. Once they are all dead, take out the Spinosaurus and then any desired dinosaur.