Use Sandbags to fortify your base, protect key buildings and bottleneck the enemy. You can upgrade Sandbags to Concrete and Metal Blocks.
Upgrade Progression Edit
|Structure Level||Upgrade Cost||Upgrade Time||Health||Command Center Level|
Building Progression Edit
|1||File:Wall 1.png||File:Wall 1 Damaged.png||File:Wall 1 Destroyed.png|
|2||File:Wall 2.png||File:Wall 2 Damaged.png||File:Wall 2 Destroyed.png|
|3||File:Wall 3.png||File:Wall 3 Damaged.png||File:Wall 3 Destroyed.png|