A game called Halcyon 6 is free to own forever. As long as you claim a copy before the 18th February.
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.
Link to get this game free: