"A merciless alien force has invaded Earth! Your command is the last hope to protect this Earth!"

My own defense strategy completed with various characters!!
Attack the flocking enemies with the optimal combination considering the character compatibility.

▶ Defend against Enemy Invasion with Powerful Heroes!
Complete the best combination for defense with cute soldiers equipped with rifles, machine guns, flamethrowers, etc., fearsome tanks that can bombard the enemy, and various defensive buildings and air units.

▶ Find the Best Formation for Battle!
Understand the map's terrain well to understand the enemy's movement path and deploy your units efficiently. A well-organized battle formation can make you more powerful.

▶ Collect Character Cards and Upgrade Your Units!
It becomes more powerful with each upgrade! Beside, you can gain special abilities at certain levels.
If you understand the characteristics of the units well and combine them, you can achieve greater synergy.

▶ Challenge mode
Test the abilities of your battle deck in Challenge Mode, where you can test your defense at higher levels of difficulty.
The higher level you clear, the greater the reward you will receive.

▶ Infinite mode
Crucial choices between the supply of resources and deployment of troops will determine how long you can survive.
Set a higher record than anyone else through endless mode."