Zoo Tycoon 2 features a number of gameplay modes, each with differing limitations, with the exception of Freeform. A Freeform game in Zoo Tycoon 2 allows the player to choose what kind of zoo to create, with the only restrictions being space, animals, and objects. The player's money supply is unlimited, and all items are available from the beginning of the game, except for those that can only be unlocked in Scenario and Challenge games. Freeform games begin with an empty zoo, to which the player adds animal exhibits and guest facilities such as restaurants and bathrooms. The player must also hire employees to staff and maintain the facilities. The player chooses a plot of land for the zoo to be built upon at the start of a new Freeform game, and each plot of land represents a different biome (the biomes are alpine, benthic, boreal forest, coastal, desert, grassland, pelagic, reef, savannah, scrub, temperate forest, tropical rainforest, tundra, and wetlands). Each plot of land is also a different size (large, small or medium).