Check out this awesome mobile game called Pocket Universe.
Ever wanted to play Universe Sandbox^2 on your smartphone?
Well, now you can with this game.
(I downloaded the apk version, sorry)
Here is a screen shots I took after I made a massive terrestrial planet, WITH LIFE, and city lights on the surface, along with satellite's orbiting the planet.
I also put Earth, in a fixed potion, near it for size comparison, and earth also has life on it as well, but it's not a space faring race yet, but does have city lights.