Grave Orbit

Grave Orbit is a sci-fi campaign about building defenses against an ongoing invasion. You collect scrap left by enemies, turn it into production, and expand and upgrade defenses around your Core. Each battle contributes to the next cycle of growth, while increasingly powerful attacks test the systems you have built.

The invasion

An incident at the edge of the Solar System was erased, contained and forgotten, but the invasion has not ended. Across 4 acts and 16 chapters, you follow the battle from the distant reaches of the Solar System toward the Moon, Earth's orbit and the surface below. New enemies appear, familiar rules change and weapons evolve as each chapter reveals a greater threat.

Enemy forces become stronger, faster, stranger and more numerous. New threats call for different responses, and bosses test the advantages you have earned. The campaign follows the invasion toward a fight for humanity and the force at its center.

Build your defenses

Between battles, you take recovered resources to the Workshop. There you expand production, add modules, strengthen existing systems and extend automation. Your defenses depend on a connected economy: weapons need ammunition, support systems use resources, and production and collection must keep pace with the firepower they sustain. As the network grows, so do its demands for resources and repairs.

Other modes

Alongside the main campaign, a dedicated Prequel explores how the first incident began. In Skirmish mode, you test how long your defenses can survive outside the campaign.