Abundant species are the treasures of the earth, but as the environment is destroyed, more and more animals are going extinct... The extinction of a large number of species has led to the breakdown of the overall biological chain, and it is estimated that human beings will cease to exist after 2000. In 4096, the earth built a time zoo and began to invest in research. "You", as the catcher of the time zoo in 4096, was responsible for traveling to the year when animals were not extinct, and took their DNA back to 4096 to capture animals. The time zoo will breed the genes into animals for care, so as to save human beings from extinction. The gameplay adopts the form of walking through the grid. The player travels back to different years and walks in the preset grid. The animals will also move according to their size, forcing the animals to a dead end with nowhere to go. Take out the gene acquirer to capture it as a breakthrough success. When encountering a larger animal, you must drink the potion of growing bigger before you can catch it. If you catch up with a large animal first, you will be eaten! The game style is easy to heal. Every time you travel back to the past through the time machine, only precise calculations can capture the genes of animals. Just like us living in the present, don’t do good things because they are small, and don’t do evil things small. Actions may protect other creatures on the earth. To protect them is to protect ourselves.