Huge and cumbersome worms are slowly crawling on the surface of the planet. They feed off the warm steam and volcanic eruptions, creating a powerful fire charge. When enemies arrive at the planet’s orbit, worms thrown the stones mixed with the lava towards the enemy's ships with the high speeds. They can fire only once per battle with a delay. But this is not the only problem of these giant creatures. The worms are selfish and devour each other. The Overmind directed that anyone can breed only 127 worms on the planet, however, 10th mutant level Worm Lord increases the number to 255. About 70% of the worms regenerate after the battle.