Zoo Tycoon: Complete Collection was the final release of the original Zoo Tycoon and included the base game, Zoo Tycoon: Dinosaur Digs, Zoo Tycoon: Marine Mania, the Endangered Species Theme Pack and every official download except the Sable Antelope and the United States Flag. The collection was released in 2003.
- Zoo Tycoon (46 animals not including Triceratops)
- Zoo Tycoon: Dinosaur Digs (22 animals including Triceratops)
- Zoo Tycoon: Marine Mania (22 animals)
- Endangered Species Theme Pack (12 animals)
- African Wild Dog, Arctic Zoo Scenario, Asian Black Bear, Asian Elephant, Atlantean Theme Pack, Atlantic Swordfish, Beach Resort Scenario, Blackbuck, Bongo, Carnivore Scenario, Christmas Tree Farm Scenario, Dino Kids Theme Pack, Fancy Buildings, Gallimimus, Giant Ground Sloth, Great Barracuda, Llama, Magnet the Polar Bear, Mexican Wolf & Theme Pack, Mountain Lion, North African Theme Pack, Plateosaurus, Reindeer and Yeti (16 animals)
- Total of 118 animals included (out of 119 official animals).