- World Setting -
The Sphere (Earth) is now facing the threat of annihilation by invaders. Humanity has been forced from their homes and has begun developing new weapons in underground facilities. As countless lives and resources are lost, humans have finally succeeded in developing a new weapon capable of opposing the invaders. Now, having endured years of agony, it is time to advance toward the hope of liberating the Sphere! Humanity is now launching a counteroffensive!

- Game Overview -
This is a simple placement-style tower defense game where you place units to defeat incoming enemies! As you defeat enemies, your resources increase, allowing you to place new units or upgrade existing ones!

- Game Difficulty -
Difficulty levels are EASY, NORMAL, and HARD! This game is suitable for tower defense beginners to advanced players, offering a challenging gameplay experience for everyone! There are 10 refined stages for each difficulty level, with each stage lasting about 5 to 15 minutes! Enjoyable even during a short break! Whether you are new to tower defense or a master, this game is for you!

- Unit Types -
Players can use the following seven types of units:

[Attack Units]
Each unit excels in different situations, so place them appropriately according to the battlefield conditions!

Standard Attack Turret: A unit with a short attack interval, specializing in defeating enemies one by one.

Area Attack Turret: A unit that excels in attacking multiple enemies with explosive blasts.

Piercing Attack Turret: A unit that excels in attacking enemies lined up in a straight line.

[Support Units]
These units enhance the advantages of friendly units, so place them without hesitation when you have extra resources!

Cooling Turret: A unit that slows down the speed of enemies.

Incendiary Turret: A unit that increases the attack power of attack units.

[Support Attack Units]
Use these units to weaken enemies before friendly units attack or as an emergency response to prevent enemy breakthroughs!

Fixed-Point Attack Unit: Provides pinpoint missile support attacks at specific locations.

Linear Attack Unit: Conducts satellite laser bombardment at designated linear locations.