- Hard science fiction.
- Lots of engineering.
- Fully working computer system.
- Space battles against the AI or other players.
- Abandoned ships full of loot.
- Waist high walls.
- Seamlessly landing on planets.
- Advanced economy system.
- Mining, trading, and looting.
- A game ending that makes sense.
This was an April Fools joke. Or rather, the name was. The game is real.
http://marseffect.net/