Top 100 Universe Sandbox Videos With The Longest Duration by JackLiberty0Top 100 » 200 » 300 » 400 » 500Video TitleDurationCategoryGame1.Universe Sandbox: Four Black Holes (1 Million Sun Mass Each) in the Solar System19:55Universe Sandbox 2.Universe Sandbox: What If The Moon Hit The Earth11:21Universe Sandbox 3.Universe Sandbox: If Two Earth's Hit Each Other3:19Universe Sandbox Top 100 » 200 » 300 » 400 » 500