Well, here's a few I found in casual...

[url=http://www.roleplayerguild.com/topics/81401-nations-kingdoms-recruiting-now/ooc]"Nations"[/url]
Low-casual nation roleplay focused on players building a nation that will be starting soon and is in no shortage of open slots. Really more of a free roleplay, but see if it peaks your interest if you have any interest for "Nation".

[url=http://www.roleplayerguild.com/topics/81251-waeldeshore-a-medieval-fantasy-roleplay/ooc]"Waeldeshore"[/url]
Pretty full fantasy based roleplay that's about to hit some action, but check with the GM and present a concept and it is possible you will be able to get in this late.

[url=http://www.roleplayerguild.com/topics/81723-lochwell-medieval-fantasy-roleplay/ooc]"Lochwell"[/url]
Fantasy roleplay in the "interest check" stage, so definately open spots. Basically, right now folks are to create some lore to make up the world, and it's going from there.

[url=http://www.roleplayerguild.com/topics/81814-a-land-of-war-high-fantasy-medieval-roleplay/ooc]"A Land of War"[/url]
High fantasy medieval roleplay that is in the worldbuilding stage with the general concept being heros in a world of war... of course, that world needs to be built up first. Interest check and definately open.

[url=http://www.roleplayerguild.com/topics/81378-the-birth-of-naroe/ooc]"The Birth of Naroe"[/url]
Definately worldbuilding focused. You could probably get away with a detailed CS, but if you want to help actually create stuff in the world, the GM is at no loss for ideas. Plenty of spots and will be starting up soon.

Don't worry, this last one is more alive than it looks like right now.