The PC/PlayStation version of the game follows an astronaut named Ulysses, who crash-lands on a planet inhabited by intelligent apes. The Game Boy Advance/Game Boy Color version is based on the 1968 film and its sequel, and follows the human Ben as he searches for Taylor, the protagonist of the 1968 film.
Contains examples of:
- 20 Minutes into the Future: The PC/PlayStation game takes place in the year 3889 AD. The astronauts came from 2125 AD.
- Bat Out of Hell: Mutant bats in the PC/PlayStation game.
- Dismantled MacGuffin: The map to the "Forbidden Place" is split into three relic pieces, which must be retrieved.
- Ulysses is one to Taylor from the original movies and Ulysse from the original novel.
- Ben in one to Brent from Beneath the Planet of the Apes.
- Save Point: The player can only save at the end of each level.