Wikipedia
Flatspace
Flatspace is an indie game for Microsoft Windows released in 2003, in which the player assumes the role of a spaceship captain. A sequel, Flatspace II: The Rise of the Scarrid, was released in 2005. A third instalment in the series, Flatspace IIk: The Scarrid Dominion, was released in 2012.
Both versions use 3D graphics with a top-down view. They combine features from space trading simulators and action role-playing games. Flatspace II adds guilds and an alien race.
Play is open-ended: activities available include trading, missions, exploration, bounty hunting, space piracy, and police work.