Build lasers, artillery, missiles, slow fields, shock generators and blade launchers to stop wave after wave of creeps, now with 4 maps, and 5 difficulty levels.
Overtake all other parasites and become the Dominant Species. Learn to master each parasite effectively and infect all forms of cellular life. Use full screen mode for better view.
Choose your antibiotics wisely to fight off the infections and save your patient. A fun way to relax and without you knowing it, you'll maybe even learn something useful.
