Starpoint Gemini 2 free on Steam for 24 hours · 2:15pm May 23rd, 2017
Offer lasts until tomorrow the 24, 10:00 Pacific time, so nab it while you can.
Never played it myself, but it looks like a highly decent space-trucker/privateer sim in the same vein as Elite or Freelancer. If either of those names made you perk your ears, then definitely give it a look-see.
(Review of x-box version, but thought some of you would appropriate seeing/hearing it in action.)
Thanks!