Endless Sky, a free and open source classic 2D space game continues expanding with the first stable release in quite some time. With the last main update in September last year, this release pulls in plenty of goodies.
New content introduced in version 0.9.12: new jobs, Remnant ships now have unique leak effects, new missions, a new extremely rare and valuable minable asteroid, new Remnant outfits, a new star/planet type with the Brown Dwarf, a new Heliarch turret with the Ion Hail Turret and more little extras to Hai space. An additional game mechanic was also added, with Solar Heat so you need to watch how close you get to system stars.
Lots of tweaks elsewhere to the game including Solar Panels now being used on various Human ships, Solar Panels also take less outfit space to make them more attractive to use, Hai space is now patrolled by Hai ships with scanners, if you attack the Wanderers you will now have to deal with The Pug Arfecta who will defend them against you and there's a bunch of bug fixes too.
For such a classic game it's still surprisingly popular. On Steam, it has a Very Positive user rating and regularly sees hundreds of players a day in it. Really great to see another FOSS game doing well.