Then you should take a look at this; http://en.spaceengine.org/ This is not really a game as much as an education tool. But sweet mother of god is it mind blowingly awesome! Its all made by one russian dude and its free! Definitely check it out and donate to him if you can. If he makes it to $250k this gets made into a mmo!
That's just it. If anything it adequately shows you how insignificant you are. It also shows how rare "earth-like" planets are. About 1 in 1,000,000,000 I think. I have found some habitable planets but nothing with advanced life on it yet. Like I said, this game would be insane if it got made into an mmo.