This game requires a Flash Browser Plugin. Spread your single-cell parasites in this fast-paced, strategy game. The goal is to overtake all other parasites and become the dominant species. Learn to master each parasite effectively and infect all forms of cellular life. Watch the online tutorial for instruction on how to play. This Flash game was obtained from Armor Games and is used here with permission. Be sure to check out the other free online games at Sea and Sky.