PikaQ

In a world shadowed by death, the silent realms await, home to the undead and the Grim Reaper's sanctuary. As long as death's presence endures, the great Undead Queen will return.

Building the Strongest Undead Empire from Scratch

[Congratulations on successfully killing the lv6 Monarch man-eating ant king, earning 600 experience points.]

[Congratulations on conquering the man-eating ant kingdom, earning skills: Invisibility, Ant King Evolution Energy, Auxiliary Barrack, and Kingdom's Tear.]

With the death of the king ant, all the man-eating ants were slain by the undead and converted into new undead.

This underground cave housed fifty thousand man-eating ants. Summoning them all as undead resulted in an army of one hundred thousand.

In other caves, there were still some young and elderly man-eating ants. Alex didn't bother having the undead kill them, as they had already submitted to her. There was no need for total annihilation.