Nice games you mentioned there plus mods for them makes them more entertaining.
There's Parkan 2, is actually fun to some point, you get to board ships, kill the crew and steal the cargo and the ship will self destruct after you kill everyone, land on planets and stations then do your stuff, colonize a planet, if your ship gets attacked and boarded you need to get off the chair and defend your ship, and do mission on the side, attack ships
the bad part is when your in the middle of the campaing and doing a lot of stuff, you will blow up a fuse because of seeing a lot of robots. and no humans, seriously, in the story, your fighting this guy in the start but when you get in to your ship something happens, your ship ends up in a sector of the galaxy filled with a civilization of robots and you're the only human in it. No variety on who you meet.
*That* is the exploration that awaits you. Not mapping stars and studying nebulae, but charting the unknown possibilities of existence.