Hades 2

Hades 2 is a first-person shooter set on a colony on Pluto in the distant future. An alien race called the Grogr, along with their robots, have invaded. The player is a soldier of the Universal Federation who, over the course of seven missions, is tasked with defeating the alien invasion. The game engine used is roughly comparable to the Build engine in terms of capabilities.

Despite the title, Hades 2 is not a sequel.