There are four possible endings based on choices made by the player. Near the end of the game, the player has the option to either go after Kirk or find their way off of the island.
- The first ending is achieved by first following Rick’s plan – knock out Gail to prevent him going after Kirk and risking his life. They choose to leave the doctor behind and ready the hovercraft. The Tyrannosaurus wakes up and chases them. Rick fires a rocket at the dinosaur. The rocket hits a fuel tank, causing a massive overload in the Third Energy generator and completely disintegrating a portion of Ibis Island in the process killing the Tyrannosaurus and all of the other dinosaurs. The three agents escape safely, but the status of Kirk is unknown.
- In the second ending, Regina follows Gail’s plan in locating Kirk with the transmitter. Gail reveals that the mission was the retrieval of the Third Energy data, but soon after dies from injuries sustained earlier. Regina punches Kirk in the face for making a joke out of the situation. As Regina gets fuel for the hovercraft, the T. rex awakens. As the agents and Kirk escape, unbeknownst to them, the T. rex splashes into the river. Regina destracts it, and Rick shoots a failsafe system that would have kept the tunnel closed. After the explosion, Regina is forced to throw an explosive into the Rex’s mouth and detonate it.
- The third ending can be achieved by agreeing with Rick’s idea in retrieving the Third Energy data, but heading to the underground heliport using the Transmitter. Regina catches Kirk trying to fly out and knocks him unconscious. Rick and Gail abandon the hovercraft when the Tyrannosaurus destroyed it, and are alerted to the helicopter’s location. All three agents and Kirk escape the Island, with the Tyrannosaurus being killed by a bomb dropped by Rick.
- The last ending is similar to the above but involves choosing Gail’s plan but instead going to the Underground Heliport first. After a brief cutscene showing the chopper, the player then will have to go to the area where Gail is normally found in the ending where he dies. Instead of dying, Regina will tell him about the chopper and then Regina handcuff’s kirk and takes him to the chopper with Gail limping behind them. After this cutscene, Gail will be keeping an eye on kirk from inside the chopper. Regina will call Rick and tell him that Gail is doing fine and that Kirk has been apprehended. Rick will then head over to the chopper because the hovercraft was destroyed. The final battle with the T. rex is basically the same as the other good ending above, as well as the CG cutscene as well.
|Ending||Gail survives||Kirk survives||Helicoper||Hovercraft|
The game keeps track of how many endings the player has unlocked at the end of the game. In the American PlayStation version of the game the player can unlock “Operation: Wipeout”, a minigame where the player must eliminate a set amount of dinosaurs in a certain time with limited ammunition, by completing the game once in under five hours. However in the PC and dreamcast versions, this minigame does not have to be unlocked and can be played without completing the normal game.