The earliest objectives require little more than constructing a few exhibits, placing the animals, and waiting for them to achieve zen-like happiness. Later ones are timed, multi-tiered escapades requiring delicate planning. Building a zoo to house endangered rhinos and panthers sounds easy, until you realize you only have one of the four stars needed to purchase them. At first I tried taking the cheap route, but I didn’t obtain the stars in time. Next, I went for luxury and obtained the stars, but lacked the funds to buy the animals. Getting it right took six tries, and at about 25 minutes per try, the enjoyment wore very thin.