Siege of Centauri

Siege of Centauri is a tower defense strategy game set in the Ashes of the Singularity universe. Communications with Earth's first interstellar colony on Proxima Centauri have gone dark, so Earth sends the Carpathia to investigate. You arrive to find the colony under siege by alien machines, and must command its defense.

Defend the colony

Thousands of alien machines attack across the surface of an alien world. You deploy defense structures, use strategic orbital abilities and call units at the right time and place to counter enemies with different attacks and defenses. You can customize the Carpathia for the challenges of each mission and upgrade your defenses with dozens of tower upgrades.

Upgrades can change how defenses work. A particle cannon can slow its target, an Artillery Post can leave fire in the areas it attacks, and Corrosion Mortars can infect nearby allies of their victims.

Campaign and missions

The story-driven campaign follows a series of challenging missions to save the colony. You can also create missions using the workshop, upload and share them with other players, and download missions they have made.

Endless Mode

In Endless Mode, you face unrelenting enemy waves in a doomed region and try to survive as long as possible. Leaderboards let you compare how long you last with other players.

Alien enemies

The enemy comes in many forms, with distinct attacks and defenses. The Falling Star disables defenses when it explodes, while the Heart of the Phoenix forms a chrysalis when destroyed and can be reborn as a new Heart.