DSOGaming writes: “Man, lots of free stuff for us PC gamers today. Earlier today, we informed you about the prototype versions of Mortal Kombat HD that are available for download, as well as the free giveaway for Anno 1602. And it appears that Stardock is also offering free copies of Sins of a Solar Empire: Rebellion on Steam for the next 48 hours.”
Source: N4G PC Sins of a Solar Empire: Rebellion is available for free on Steam for the next 48 hours