The BioDefense: Zombie Outbreak is highly addictive real-time strategy game in which you have to protect your base against the waves of relentless zombies. Extend your base into the pitch-black wastelands for more resources but be careful of different enemy behavior. It's a unique real-time strategy and tower-defense game which provides 10 missions, 6 types of unique enemy, 25 OpenFeint Achievements and OpenFeint Leaderboards. In the survival mode, play for countless hours to unlock more content.
