Zoo Tycoon 2 features three gameplay modes: Campaign, Challenge and Freeform. Guests will visit the zoo to see the animals, and they also have needs that need to be fulfilled through scenery and buildings (hunger, thirst, bathroom, seating, entertainment). The Zoo Tycoon 2 gameplay revolves around creating suitable exhibits for animals through habitat modifications (ground cover, water, elevation, foliage and rocks and a variety of items including food, enrichment and shelter) which fulfill the animal's needs (habitat, hunger, thirst, stimulation, privacy, sleep, social, exercise). See List of animals in Zoo Tycoon 2 for a full list of animals in the Zoo Tycoon 2 games.