National Void City Lord: My Defense Tower Can Mutate

All the humans on Blue Star have traveled to the endless void, and everyone has become the city lord of the void cities. Various monsters attack the city every day, and the city owner needs to build defense towers to defend his city. Build a variety of defense towers, collect all kinds of strange and functional buildings, and resist waves of fierce monsters attacking the city. Ding, your trapping tower successfully captured an elite monster from among the siege monsters. Ding, use the mutation talent to mutate your basic arrow tower into a flying sword tower. Ding, if the hidden conditions are met, your electromagnetic tower and aurora radio tower can be fused and mutated into a plasma spark tower... Endless world, a different tower defense game, where everyone travels to the void to become the Lord of the Void City, allowing you to experience endless monster sieges. Come and defend the city! The BOSS is about to appear!