After the events of "100T Earth Defender" and "Exsilium", the Earth is under alien attack!
All out of a sudden, unknown alien lifeforms started a global invasion on Earth!
To counter the new crisis, heavily armed cities called "Anti-Extraterrestrial Threat Strategic Metropolis" had arisen.
As the commander of the security forces in one of these cities, you have to build up the O Pi Team and defeat invading alien lifeforms and protect the Earth!
Features:
- A classic tower defense game with few twists to give a whole new experience!
- Simple gameplay mechanics fits for casual plays.
- Proceed through missions and unlock new characters with their own specialities!
- Upgrade troopers and facilities to gain the upper hand!
- Full storyline included! Follow the daily routine of the O Pi Team and protect the Earth from alien invasions!