Games similar to Unending Galaxy include Endless Sky, which is free and open source. Other options are NAEV, Destination Sol, Transcendence and Space Pirates and Zombies. You can choose from more than 10 Exploration Games like Unending Galaxy for Windows, Linux, Mac, the web and Android.
Space exploration adventure RPG where you command the crew of a massive battleship in a story driven sandbox universe. Work under the guidance of your violent and nihilistic companion to destroy the sensor network guarding a mysterious planet.
United States
Captain Forever Remix is an officially-licensed re-imagining of the indie classic Captain Forever.
