This Mode is super difficult. Players need to survive for 100 days in this game. In ninety days, the zombies will dismantle the cubes, and because of the physical engine, it is useless to stack up. At this time, basically they can’t run the zombies. They can only hide under the ground without making any noise. The zombies can hear them, and there are blood moons. , Extremely abnormal, will spawn hundreds of zombies around you, the range of light sources such as torches will be reduced, and zombies will spawn in dark places likewise, and it is difficult to clear the level in short.