[url=http://store.steampowered.com/app/72200/]Universe Sandbox[/url] Gotta say, kind of a space geek that appreciates real space magic, gravity. [quote]Create and destroy on a scale you’ve never imagined with the ultimate space simulator. Harness the power to create black holes, collide galaxies, and manipulate gravity with just a few clicks. Inspired by the software astronomers use to unlock the mysteries of our universe, never before has astronomy been so interactive or so much fun.[/quote]