Humans are all dead and only zombies are alive who have now turned on each other for food. You're one of the zombie factions and must destroy others to survive now.
Every human own billons of nanoscopic cells.
Some of these cells are doomed to protect our organism and fight foreign organisms. Use your cell colones to slowly progress and take over the map.
Across the world terrorist threats are becoming a serious problem. Every country in the world today is deploying special forces to eliminate and neutralize terrorist threats. Destroy terror camps that are training terrorists.
