[@Holy Grail] I'll be happy to explain and glad to have your interest. A Nation RP is some more "grander" compared to your usual character rp. In cases of my rps, the only differences between the other standard rps and this one is that you have a wide and limitless caste of characters to control, making all sorts of stories of the citizenry within and out of a nation, and even more possibilities with other players :D

Check out the IC in the main thread, you'll get a god idea on our style of rping, as said, it's not TOO dissimilar, just we have more freedom on how many characters we control. 

I will have to note that the Garden Worlds have all been taken, but youy can still join as either a smaller-scale organization or a Non-Garden Nation(An Independent Colony made up of whatever species are presented in the setting) 
http://www.roleplayerguild.com/topics/160092-gardens-of-jalaryias-small-scale-interplanetary-nation-rp/ooc