It is a doomsday shooting game. The maps on each layer are randomly generated, and the monsters are also randomly generated. Abnormal magic! Unlock survivor heroes by challenging levels, save survivors in the level, and the rescued survivors will continue to join the team to fight. Every time two identical survivors are saved, the original survivor hero will increase by 1 level. Treasure chests can be found in the level, and items such as gold coins, survivor fragments, bombs, etc. can be obtained by opening the treasure chest.