Operation Genesis

Jurassic Park: Operation Genesis (JPOG) is possibly the best build-a-zoo game and the best Jurassic Park game ever made. Players have to create their own version of Jurassic Park by extracting dinosaur DNA from fossils and amber, build hatcheries, fences, amenities, tourist attractions and maintain the park's security in order to achieve the goal: build a five-star theme park. Also includes a series of challenges which, upon completion, unlocks 'Site B', allows you to do everything else you could do in the game except there are no financial limits or tourists.

I love feeding Gallimimus to my T-rexes in Operation Genesis. Sometimes I release the velociraptors and watch them devour my tourists.