33:42

What if Earth became a Rogue Planet?

28:11

Belligerent Aliens

35:55

Stargates

34:27

Mega-Cities

36:18

Escaping the Galaxy

34:10

On Worldbuilding: Fallen Civilizations! [ Forbidden West | Halo | Doctor Who ]

21:56

What If Alien Life Were Silicon-Based?

51:23

Mezopotamya - Sümerler