Live on the Double Planet was created in 1986-07.
Animal Planet Live was created in 2001.
Planet Earth Live was created in 2010.
Live from Planet X was created on 2004-08-15.
Double Live Assassins was created in 1998.
Double Trouble Live was created in 1985-11.
Live at Planet Rock Xmas Party was created on 2008-10-06.
Ben Elton Live from Planet Earth was created on 2011-02-08.
Double Live Annihilation was created on 2003-03-25.
Double Down Live was created on 2009-10-20.
Live at the Double Door Inn was created in 2002.
not realy. Your created empire continue to live as an NPC empire
None. Pluto-Charon was almost considered one in 2006, though that would be a dwarf double planet rather than a true double planet as Pluto is not a planet. In billions of years the Earth and Moon will be a double planet. Also, the question is non-sensical because if it was a double planet then they would both be planets... so there would be no moon. A planet would be considered a double planet with it's opposite planet, not moon.