The Spartans
Defense Tower Upgrade
Upgrade the tower defense system and its skill.
The system of each tower type includes 4 levels. When you reach level 3, you can choose the direction in which the watchtower upgrades.Depending on the type of watchtower, there are two different raising directions.
The tower's own custom skill upgrade system will increase according to damage, range, bonus gold, accuracy.. (will be opened more in the next phase)

Upgrade Level - Archery Tower

Upgrade Level - Cannon Tower

Upgrade Level - Magic Tower

Upgrade Level - Fire Tower