Operation Damocles is the name of AT-43's starter set. It is a two player game box, that includes a [[Therians] army and a UNA army.

Setting In the fictional background story of this game, 43 years ago, humans who inhabited the planet Ava—known as the United Nations of Ava (UNA)—entered into combat with an alien species known as Therians. The ensuing war left Ava in ruins. This event is known as the "Trauma."

The game begins when, 43 years later, humans launch a counter attack, called Operation Damocles.

Therians are aliens with a technology that looks almost magical to other species. Therians are able to reshape their bodies and worlds to virtually any form. It is said that Therians are the original humanoid species, and that many of the other species in this universe were designed by them.

Karmans are smart gorillas who use powered armors, this species releaved from the Therian rule, they use melee attacks and hover vehicles

Red Blok are human soldiers with a communist background. They are allied with the UNA in the fight against the Therians. But tensions between the two peoples remain.

Cogs are made up of several alien races united under a single banner. They utilize Quantum blades and large Missile launchers.

ONI are an eastern-like civilization that uses cybernetic zombies, little is yet know about the ONI.