Towers

Refineries are very important structures that are the main ways to progress through levels. They can only be built near Etherium deposits, which sometimes have an enemy base built on top of them. To build a refinery a player must bring units within the radius of the deposit for 5 seconds. The more units that are in the radius, the faster the refinery is built. Refineries process Etherium into Etherwatts, which is a potent energy source highly sought after by all main groups in the game. Towers are a fundamental part of Iron Marines. They can be built in tower holders near refineries. Refineries usually have two or three tower holders, but in rare cases they can have up to five. Towers have the important job of protecting the refineries from enemies. If a refinery is destroyed, then all towers associated with that refinery will also be destroyed as their energy supply is cut off.

There are three main towers in Iron Marines, all with a different purpose. The Minigun tower is the first tower, and is unlocked in "Retaliation". The Rocket Platform is the second tower, and is unlocked in "Search And Rescue". The Laser tower is the third tower, and is unlocked in "Factory Strike".

Along with these buildable towers, there is one special tower: The Ga'r Warhall. These can be found across Borealis, and is first introduced in the level "Ice Breaker". Minigun: The Minigun costs 50 etherwatts, and is the first tower introduced to the player. It is very durable, has a fast rate of fire, and a medium range.

Rocket: The Rocket Platform costs 70 etherwatts, and is the second tower introduced to the player. It has on the weaker side in terms of durability, but can withstand a good chunk of damage nonetheless. It has a slow rate of fire, and a very long range.

Laser: The Laser tower costs 100 etherwatts, and is the last buildable tower introduced to the player. It is fragile, but deals high damage to groups of enemies. It has a medium rate of fire and a medium range.