Nexus: The Jupiter Incident is a "tactical fleet simulator," which basically means it's a sci-fi strategy game with real-time combat set in the cold black void of (Tim Curry voice) space. It's quite well regarded—PC Gamer magazine gave it an 83% review score in April 2005, according to Metacritic—but, as you can tell by that review date, it's also a little aged. More important than that, though, it's also free on GOG until July 6 as part of the storefront's ongoing Summer Sale.
The setup is classic: 60 years after the catastrophe of Noah's Ark, humankind's first colony ship, an uneasy peace has settled between the megacorps who rule the solar system—until a startling discovery throws that balance of power into chaos, and you, the famed young captain Marcus Cromwell, find yourself thrown into the fires of a new conflict.
