Zoo Tycoon: Ultimate Animal Collection

You make money through admission fees, concession fees, restrooms, and some entertainment. You can also sell your animals although this is not suggested as you will make plenty of money through the aforementioned sources. To increase your income you can also set the prices to a higher value as they are all set at normal to start. You will most likely snag this achievement within your first two zoos as it is cumulative and cash flows in rather quickly.