Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.
For Windows (XP, Vista, 7, 8, 10, 11), Mac OS X (10.11+)
Link to Official Site (Source Code)