IHalcyon 6 Starbase Commander is now available for free on the Epic Games Store as their latest weekly giveaway. You have until next Thursday to pick up your copy, and after that two new freebies will take its place, which will be Rage 2 and Absolute Drift. Here's the deal on Halcyon 6:

A retro space strategy RPG with base building, deep tactical combat, crew management and emergent storytelling.

On the edge of Terran space lies Halcyon 6, a derelict starbase left behind by a mysterious precursor race. Your mission is to reclaim the derelict station and rebuild it. A mysterious alien force is making a beeline towards Earth and this starbase is the best chance for the New Terran Federation to establish new alliances, research new technologies and otherwise figure out a way to stop the impending invasion.